I liked the flight powers too. After comparing the available packs, I found that the 5000 packs are likely too long for a buggy application. They are too long for me anyway. The 4900s look like the way to go for buggies, although they are still a bit too long for my battery tray.

I think I'm going to try the Kokams. Whether they are better compared to the flightpowers is debateable, but at this point it won't kill me to have second best. I just want something better than what I've been running.

Besides, from what I've read, the Kokams take a bit more rough handling than other lipo cells do. I hope that they are the ticket.