I've got 55k on the clock on my 2007 TRD. I love the truck, it's the most enjoyable to drive and well sorted than any truck I've owned or driven, and it scoots along pretty well too.
As for the locker and weak rear end. I've had mine engaged in 2hi while rallyx'ing, no complaints yet.
My biggest gripes are;
Composite bed, pain to bolt to it, had to get really creative to mount my FWC.
I too have a wind noise around 75, it's just my reminder to back off a little to keep the insurance down.....
I hate not having a manual t-case, waiting for a little light to stop flashing to tell me I'm in 4wd really irks me!
Toyota's rear spring TSB. I didn't find out about it til after my warranty was up, that means I'm not entitled to a fix? What a rip!!!!
I've recently developed a single click, when I go from forward to reverse or reverse to forward, after moving about 20 ft *click* and that's it...
Mileage is always the same whether I'm driving like grandma or steve mcqueen, and is worse than my dad's crew cab F250, I get 17-18 no matter the surface, where as in road trips in his truck we've gotten 18-20, even pulling a trailer!
Seats are GREAT! Best factory seats I've ever ridden in, really keeps you centered in the seat.
All in all I can't really complain, I bought a Toyota for their reputation for longevity, and I've always thought Toyota pickups just oozed cool, especially in the 80's. It's still my favorite vehicle to drive of the 4 in our driveway (cherokee, 83 mustang, 07 focus).