I went to the dealer today and he let me use an SR5 for an hour or so. The difference in feel between the SR5 and my Limited is quite pronounced - much smoother - to the point of feeling a little bit too soft for me.
However, it's hard to tell the reason for such a contrast. The SR5 is somewhat lighter (200-400 pounds?), doesn't have XREAS and has the 17" wheels and tires so it's kinda hard to totally know what accounts for the difference, though I think it's mainly the XREAS and the tires/wheels.
I'm not too crazy for the choppiness of my wheels/tires on our sh***y roads around here, but I really don't want to go too far toward the comparative mushiness I felt, either.
Anyway, to make a long story even longer, I think I'm gonna stay with my 20s and just look forward to replacing my tires with a wider version when the time comes. Thanx for the offers to trade, but I think I'll just try to be satisfied with what I've got.