Effexor- Best SSRI/SNRI?

So I have tried all of the SSRI's. My doctor now wants to put me on Effexor, because she has had good results with patients she says. Does anyone think that this is probably the most powerful of the SSRI/SNRI's? I am just sick of going through the SSRI merry-go-round, as none of them have done anything for me. Remeron didnt do a damn thing either. Im thinking MAOI's are the only think that are going to help my social anxiety/depression. Anyone had success with Effexor?