The seat in my 4Runner has a lot more support than the non-lumbar seat in my old 2008 Tacoma. After sitting in that thing for hours, my back would literally be sore. I have no issues with this seat at all since I can adjust the lumbar.
I am with some of you though, I have yet to get a comfortable seating position, I dislike having power seats, I would prefer just having the seat on a slider, and having the tilt handle. The seating position in the Tacoma was great, just had no lumbar support, the support in the 4Runner is great, just cannot get a good seat position going. Last night just for fun to see how high the seat would go, I was raising it and before it maxed out, my head was squished against the roof, lol. I am 6 ft 3 and 194 lbs.
Oh well, what can we do unfortunately, either get another vehicle or live with it...or spend a bunch and get something custom done.
Oh yeah, and my lumbar support makes noises also, still works fine, just makes a lot of noise when the lumbar is at certain positions.