I have now flown this pack. It seemed to do well, not getting warm at all. I am still sorting out some issues with the acro kit, but the extra flight time is hard to beat. I also flew the same setup with a Polyquest pack. I seemed to get a little more power from the PQ pack, but thats subjective (very little difference either way). It certainly wasn't enough to warrant the 3.5X the cost of the PQ pack for this application.
So far I am very impressed. The company is honest and has a fantastic price. Construction of the pack is very nice. I was also happy to see that the 100gr weight listed on the website is the same as what my pack weighed with a connector, balance connector and wires. Also, the pack comes with a label that has useful information like max discharge and ma charge rates. This is a fantastic idea I wish other companies would follow.