A great player and a decent guy by all accounts, minus the constant drama and Toxic Twin history of Steven and Joe.
Quick Aerosmith story:
Back in the 70's-80's there were a bunch of guitar stores (Pre GC) around Berklee School of Music in Boston, and my musically inclined friends and I used to haunt them, drooling over gear we couldn't afford. It was commonplace to see members of Boston bands like the Cars, Aerosmith, and Boston trying out gear, particularly at the biggest one, EU Wurlitzer.
There was another big store called Daddy's Junky Music on Mass Ave. I came out once (having bought nothing, per usual) and saw two "bums" sitting on an old truck bench seat left on the curb for trash. They both looked like the typical run of haggard Boston street guys, but as I got closer, I realized it was Joe and Steven. I was too chicken to ask for an autograph, so I called out "Joe Perry!, and he raised three fingers, like the Pope giving a benediction. Glad to see that they are both(?) sober these days. I'm sure Tom had his share of rock-star behavior, but weathered it better.
I only recently found out that my favorite Aerosmith Tune, Back in the Saddle coincidentally, was Joe Perry on a Bass VI. Here's an isolated bass track. sloppy as hell, and the timing is bad, but through the magic of recording, it sounds great on the track. I don't know if Tom doubled this on 4-string bass, the one time I saw them in concert, Tom played it fingerstyle on a 4-string.