I have 3 Hobbico LiFesource batteries and they are going strong 3 years later. I have 12 GeForce LiFe batteries ranging from 700, 1100 and 1800mah LiFe batteries and EVERY 1800mah LiFe battery puffed over the winter.
Hobbico batteries are 7-9mOhms per cell while the GeForce packs are 22-28mOhms. Hobbico packs are also a full year older than the GeForce packs.
I obviously think these are still a great deal as I'm buying 10 more, but I wouldn't trust a puffed pack in a nice plane so for $10, they're a great deal and I can replace them every year.