I think the main reason folks have trouble with the twin stick setup is they lack a good charger. Your middle of the road AC powered sport charger simply will not load the stick cells up like a good DC peak charger will. I run twin sticks (2400 Maxx packs) in my buggy and truggie box and they work great all day after a good hit from my CE Pitbull. I use my 30A power supply to run the box when breaking in engines, but the stick setup IMHO is the best for track use.