Yeah, the Amp reacts a lot on the used speaker. I like the stock 10" - they are really powerfull but have an immense beaming effect.
I got an ext. cabinet loaded with 2 V30 - those fit very good but they are a bit too aggressive for my taste. I switched to a Greenback and a G12H (China) and this makes a perfect combination for me.

The superfly seems to be a good amp, I like the sound.
Man I hope you can check the Diezel Schmidt one time. This one is a superamp with such a good sound..

...But this has nothing to do with Zinky so btt.