I don't cycle them often but next time you buy a new pack cycle it about 4 times and see what happens. At the moment I'm charging three Lipo packs I just bought just in case I may get to go flying this week. I only use the Lipos in my electric planes and I have been giving the A-123s some thought. A lot of the guys I fly with have been using them for a few years and swear by them.
My problem is I have been doing this a very long time and I have about 5 really good chargers for nicad and nimh and only one crappy charger for the new batteries. I have the older triton that doesn't have a a blancer on it. It's also only DC. I'm using the new Triton I borrowed from a friend and really like it, works on everything but only one pack at a time. It's also a very high dollar charger!! It does cost a bit of money to change over.