Ok thank you for all your replies! I'll buy a Quark 33A as soon as I see one for a good price.

But yesterday I bought a other ESC: Quark Competition 80B! I never interested me for Quarks ESC's on eBay but I bought this one for $78 and I think that is not bad, is it?
Ok, I already saw some replies about Quarks service. Is their service still not very good? If I run my 80B on 3S and it will catch a fire, they won't give me a new one?

Thanks,

Patrick