They will all give you that sound givin your chops. Stevie Ray sounded like Stevie no matter what he played. The SSS was only part of his sound. I can get Steve esque tone w/ my 100w Hrm BM but I think any NON HRM would give you his tones too.
Most of them lows he achieved was Partly due to the 2 Modified Vibroverbs w/ solid state rectifiers, "15 Ev's and various other circuit mods. There is an article in a tone quest magazine.
SRV had a strange brew of amps, I heard a bootleg of him playing threw just a Marshall JCM 800 and he still got the same tone.
Here is a link to some info:
http://www.thegearpage.net/board/showthread.php?t=557026