I've owned a '98 and an '01 reg cab 4 cylinder Taco. They were great trucks in my 20s, cheap on gas and maintenance, plenty capable stock with good tires, and small and easy to drive off road while I was still new at it. My girlfriend and I explored all over the Sierra and Mojave desert in those trucks. (the only reason I had two trucks was my first was totaled when somebody rear ended me.)
Well I'm 36 now and we have a dog and were getting sick of the cramped quarters of the 1st gen Tacos, especially the reg cab. I bought a brand new '10 4x4 AC 4cylinder which we immediately fell in love with. Plenty of room between us with lots of storage space in the cab fir things like maps, guide books, and cameras plus the dog has her own area behind us. I have to say that the 4 cylinder worked fine in the older Tacos, but it sure doesn't work in the newer ones with bigger tires, 265/75/r16s. Going over the Sierra I was often in first or second gear with the pedal mashed to the floor and the gas mileage went way down, 17-19. Sand wasn't much fun either. I was hesitant to finish the planned upgrades (small lift, rock armor, etc...) as I thought the added weight and height would further undermine the already underpowered engine. So what to do... Yep, bite the bullet and trade it in on a '12 6 cylinder TRD Off Road and this time get an auto tranny, my first ever. The 6 speed tranny is not an easy one to use and gets worse mileage.
Now I couldn't be happier. We're finishing up our first trip with the new truck right now in Joshua Tree NP. The truck is bone stock with the exception of a camper shell. I have zero complaints with this truck. It's got plenty of power and the auto tranny makes rocks easy, I still prefer a manual for street driving though. The width of the truck makes certain situations tricky while off road compared to the first gens, but I'm a much better driver now and take things very slowly. I prefer the added space over the first gens ease of use of road. I cant wait to get some better tires and a lift on this truck.