If you get a lot of usb disconnects (CTAx rises over time, CTA2, CTA3, ...) then this is a worse firmware than 0.6.48.  On a stable box this one is slightly better than 0.7.22, 0.7.46 or 0.7.53 in terms of stability and hashrate.  I find it better than 0.7.6 but only marginally on a stable box. 

I will be retargeting my patches that might get slightly more performance out of a box by allowing you to split CTAs in terms of power stepping (cta_load) and power supply loading (ps_load).  I will do it for this version of cgminer and the associated tweaks to the firmware to not override the changes.