SO much new hardware, so much hashing power, sooooo much demand!

I have my tiny little BlockErupters working away for months now and have my ROI, surprisingly. I can't stop looking at all the new hardware that is available as I keep falling farther and farther behind on my hashing power. I am trying to decide what the best route will be... graphics card, ASIC, or new i7. I currently mine XPM and PPC since the BTC network is around 6PH.

I am leaning towards the GPU for scrypt mining, but would love an ASIC.