I have a pair of 2s 6.0ah 90c hardpacks that I run parallel as a 4s. In a Kraton and Typhon, mostly on a off-road track. IMHO, great packs. My last raceday was 90f outside, and the packs were run hard, recharged them at 10a, run some more, repeated about 4 time during the day. The did swell a bit as the day wore on, but overnight they settled back down. I was running both cars with 3 packs for a full day of racing. They never missed a beat. One of my Turnigy Nanotecs (2x2s, 5.6ah, 50/100c) really didn't like that same routine, and would not balance by the end of the day. My 3rd battery was a SPC 4s 5ah, 50c, it never missed a beat.
So thumbs up from me for the Turnigy Graphine packs.