Phase 90, I think it sounds better than the small stone, but I think you have more control with the small stone than with the Phase 90.
I a/b'd a small stone vs a P90 a few weeks ago. The SS was very harsh and had some weird quirks in the phase that I didn't like, there wasn't something wrong with it I just didn't like it. Needless to say, I bought the P90 on the spot.
Russian Small stones sound real nice to me- but thats just what I think.
Genz Benz El Diablo 60
Avatar cab with Man O War, Black Powder speakers
Schecter 20th Aniv. Stealth #07 out of 100