hmmm I found no problem at all getting all 303 sounds down with it.
It just requires good knowledge, and use of effects, even a tb 303 sounds shit without good effects.
Also, I opened mine up, and changed some of the Pots, so the filters on mine have even more range.
I used to make proper acid techno, and I sold my tb 303, and got another 383. Playing live every week on the rig, no one ever noticed.