Figure I'll throw in my input. This is long, disjointed and badly written... but this is my last forum stop for the night... too many posts to care
I own a 2004 Titan XE ("cheapo" model). 4 doors and 4WD. I love the truck. I hate the mileage, but that's to be expected from a full-size gas Nissan...
I use the holy ******** out of it. 3 years and more than 70,000 miles... still going strong. I had the brake problem, which was fixed. That's the only real problem I've had with the vehicle. I take good care of the internals; changing fluids, watching levels, all that. I expect this vehicle to last a long time. Synthetic rear diff fluid first changed at 10K. No problems there, but I did hear of a few problems with rear diff failures... also of some diffs not being filled properly at factory. I think there may be a correlation, but who knows...
The OEM tires were crap. The BFG AT/As or whatever they are called that I have on now have been fantastic.
I spend a lot of time in deep snow and on rough roads. Not as much on true 4WD trails, but a little time there. I find the width of the truck to be a little tricky every now and again... occasionally I find it to be beneficial even, but that's pretty rare.
I'm not super-psyched on the suspension or the axles. I think it is slightly undersprung and I can see the axles being maybe a little underbuilt for true abuse... but I'm not jumping the truck out in the desert like some of the nuts out there (I think some of you have purchased products from PreRunner Greg, eh?). I think for 90% of the people out there the suspension is great. Does well enough off road and is very smooth on the highway. I may upgrade the suspension at some point for better high-speed bad road performance... but that's $$ better spent on other things at this point. It has a IFS for those keeping score, which is pretty standard on Nissan trucks... and most trucks these days, but for some that's a strike against the vehicle... I'm much happier with this than those I know who have purchased domestic full size trucks in recent years in terms of off-roading, general power, highway behavior, etc...
I replaced the bumper with a Kennesaw Mtn Accessories "Wincher" bumper because I hit a parking block and messed my bumper up pretty well. I wanted something cheap with a lot of strength, but didn't want to spend a lot of money. The bumper I bought is cheap (relatively), tough, a little ugly, and has the options I want. I got a reciever style bumper so I can attach a reciever post mounted winch when I need it. I also got holes put in the bumper to accomodate some 5" and 7" lights for better lighting. I had tabs welded on before it shipped as well. D-rings on the way. I'm working on fabbing up custom brackets to re-install the alum. skidplate to protect the steering hardware and feel better about being off-road again.
The cheap plastic liner I got with the truck was garbage. I put a proper bed-liner in there (Line-X) and a Leer shell that I had sprayed as well (got a killer deal on that one). I'm really happy about the ability to pressure wash the inside of the truck bed, top-to-bottom.
I'm planning on getting a Maggiolina (spelling?) rooftop tent on the topper one day. I'm just short enough to be able to fit into the bed to sleep (5'8" tall... but I have to sleep at a
slight angle. the bed is 5'5" or 5'6"). I like sleeping in there well enough, but usually have a lot of gear so it is difficult. Usually bikes, skis, food, stoves, dogs, water, god knows what else... I've spent many a night in the cap stretched accross the back seats or even the front (with "bench" seat folded flat). It is too short to do it often, but does the trick for someone my height in a pinch.
The transmission is very smooth on the Titan. I think it is the same as is used on the Xterra's newer iteration. The engine is huge, gas guzzling, and fast. It can tow plenty and is really strong in 4-lo (no surprises there). I spend as much time on the highway as rough stuff, so I tend to get from one place to the next as quickly as possible. The truck is very smooth on the highway and the engine pulls great.
The interior in the nice version is pretty nice, but it is all overkill for me. I have the base-model with crappy cloth and plastic and am totally happy with it. Simple, intutive, ugly, easily repaired, etc... who needs nice mahogony **** on your dash while you are driving from Denver to Smithers, BC to AZ? I had one small tear due to my negligence... but maybe a tougher interior wouldn't have torn? I dunno. It's a truck afterall. Who cares.
All in all, aside from fuel economy, I'm pretty happy and would make the purchase again. If you need a truck that can haul a lot of gear and people with room inside to spare, that can 4 wheel reasonably well (with rear locker!) for a full-size pickup, it is a decent option. Plus it has an auxillary audio port and I can plug in an iPod. What more do I need??
I'll dig up some recent photos, but here's one with the truck in stock form, taken a couple of years ago at altitude... complete with hot-pink cast...
(taken pre-bumper replacement, post bumper damage (out of sight), pre-desert/mountain/urban pinstriping, pre-a lot of things actually...)