The Buell Ullises is a pretty nice bike but far from a "ADVenture" machine, from the start the Steering lock (How much the fork can move to turn) is constrain by the shape of the frame (Awesome water form frame that holds the gas inside) also suffer from ground clearance issues, Rocks get on the Belts from time to time and they somehow "EXplote", again is more a SUV than a real "Truck"
In short is a great statement bike, really pretty and actually very well crafted (specially for a Harley) but is more a "Poser movil" than anything else..
If you are Serius about long term riding, with no acomodations or luxury the old R80GS and R100GS are famous for the extreme reliability and easy to fix.
Also on the cheap the Kawazaki KLR (650 single) is dificult to out-stage, is basic, hell is very basic, nothing really works perfectlly, but it get you around and they are almost Un-killable.
Another choice a little more street oriented but also capable of dirt and long highway milliage (far better than the "Ully" that is for sure) is the Suzuki V-strom series, they make then on a 1000CC version and the one I like the most the 650cc, they are base on the SV650 street bike V-twin engine (Twins is were is at in terms of Torque) and you can find a miilion aftermarket parts to make them Go, plus they are very dependable and not to expensive to operate..
In my eyes the Fairnings are a little to "Plastiqy" and chessy but they work really well in terms of wind protection..
In my case I have own a KTM950 ADVenture and Yes they do have issues, specially the first year, but Oh my God she will leave anything else in the dust (well maybe exept the $20,000 dollar BMW HP2) in terms of Dirt performance (for a big bike that is) and also ride very well on pavement.
I also have two KTM 640 ADVentures, I like them even better than the 950 and they are mostlly trouble free, with a exelent service record and a few wins at the dakar too (No big deal actually since about 90% of the bikes racing the dakar this days are KTm singles)
but My very favorite of all time is my R11GS that I have almost a 350,000 milles of absolute trashing (See the tread I start the other day oin this same forum), so far the engine is the same, yes I have replace seven clutches, 4 trannys, many, many brake pads but she has never let me down and alway brings me home, not to mension the riding caracteristics are amazing and well make you look like a "Rockstar" even if you are a mediocre rider, on the contrary the KTM950 will eat you alive if you make one mistake...
one big leason that I'm sure you know already, don't believe everything you read on the Net I'm being around Motorcycle forums for a few years and the typical person that complains the most is the one that rides the least...
Here are my
Picture Galleries if you feel like taking a tour on motorcycle heaven, at least a somehow "Dirty" kind of Heaven