I received my Quark back yesterday, my Spektrum dx2.0 today, S&T also sent the PRO-BEC (very nice). The PRO-BEC is made by S&T and looks to be very well made, and is very small, about 1/3 the UBEC.
I attached the Quark naked board to a decent sized heatsink with the stock thermal sticky pads, and then shrink wrapped it, as well as adding two extra caps on the input bar, opposite of the stock caps. (this is temporary)
Even with a large heasink on there, and moderate driving the Quark got very hot. The heatsink got very hot and just almost as hot as the output wires, but no thermals, and the caps stayed only slightly warm to touch.
http://picasaweb.google.com/SethHuls...49267617195762
http://picasaweb.google.com/SethHuls...49267617195746
http://picasaweb.google.com/SethHuls...49271912163074
http://picasaweb.google.com/SethHuls...49271912163090
AAngel: With my Spektrum radio now, I don't have the low speed capability I had with the stock TQ-3 radio, it's definitely not a snails crawl anymore, which I miss... but no more glitching!