My joints are worn out from my MMA career, so even if i'm not going heavy, sometimes i still sleeve or wrap up just for the added warmth to the joint.
I use APT convict (2 ply) elbow sleeves when going for a heavy overhead or bench, also if i'm going for a max effort squat the pressure from the hard external rotation on my elbows is a killer and the sleeve help that a ton.
I have broken my wrists all too many times, so for all of my OLY lifts i wrap my wrists and unless i'm using the log for overheads, i generally use them for heavy BB overheads.
Rehbands are on most of the time i squat. I try not to wrap my knees unless i'm closing in on 95%+. I just bought a pair of the new APT (blue/black) knee sleeves and i have to say these things are great for support. More then most knee sleeves but less than wrapping them. I have been switching the rehbands out for the convict style sleeves at squats above 455 and i notice a huge difference.