Recently reacquired a T3 after three years. Some thoughts:
pros: a great lens; a pocketable and stylized body; fast focus in most situations... at this point I feel rather unnecessary to list all the strengths that good cameras share. It's one of them, that is.
But there are still two major pros that set the T3 apart: the astonishing 1/1250s top shutter speed; the pretty useful manual focus setting (it pre-protrudes the lens barrel to selected distance setting unlike many P&Ss with "manual focusing", completely getting rid of auto-focus lag, and is with little shutter lag).
cons (big and small):
kinda prone-to-scratch surface; hard-to-grip shape; smallish adjustment wheel; dim, un-lit framelines (or more precisely, corners); single tooth on take up spool that will eventually wear out; pretty weak lens motor mechanism, reports of lens failing to retract (or lens lid not closing properly) are not uncommon; It doesn't have custom ISO setting, which could be annoying to push lovers.
For the class and price, the build quality is just okay. It feels plasticish comparing to the Nikon 35ti, or the similar sized Minolta TC-1.
You will often find T3s with scratches and (more likely) dings. That makes me hesitate to put it into heavy use as with cameras like the Ricoh GR1.
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All in all, a positive experience - specs and image quality make up for all. Will recommend it highly should the price be a little lower..or you can find a bargain one.