Wich is the best option for online multplayer of SF II Turbo?

Classic Fighting Games Super Street Fighter II Turbo
1

I just aquired the SF Anniversary Collection (Steam) but its hard to find online games… Any hints for me? Are there other better plataforms?

2

Fightcade 2. I assume you mean SSF2 Turbo and not SF2 Turbo, but they have both.