I've had the Studio X heads on for about 2 weeks and I have to admit that they are the best sounding heads I've had in a long time.

Much thanks to Ricardo and Russ for giving me a idea of what to expect from them.

I changed the reso's from Evans G1's to G2's. Not a big change I know, but it looks like the Studio X heads will be on my drums for a long time so I'll have time to fully test the tuning range of each head.