Hey guys!
Very new to the thread, but wanted to weigh in on the topic. Most of my participation here has been lurking, sponging up info.
Great to hear feedback on dampening. We installed some Taco 5100s (think they were, they are Yotatechs front three position adj) on my buddies '97 T4R (stock springs on highest collar position -3rd) and while the ride off-road was plush and helped IFS hunting over rough terrain, I felt the dampening was a little low during on-road testing. It may come down to dampening preferences and the butt meter. Just as an aside, measured lift from center hub to fender flare averaged out to around a 2 3/4" lift. Looked great with a 3" spring and gear in back... now what was I saying?

fftopic:
For my money, I would want to know what the dimension differences b/w the Taco and Tundra shocks, from mounting point to mounting point. Then I'd want to know the differences in case length and the collapsed dimension from mounting point to mounting point. it's all about finding the maximum suspension distance.
On paper the five position Tundra shock would be my preference because I'd be able to get a finer tune on down travel and the firmer dampening would match a firmer spring rate to absorb tougher impacts. I'd also hope the Tundra shock would also net you a longer extended length with a greater travel range. Anybody ran all of these numbers?