I would like to stick with nicads for now. One of my main concerns is to get some redundancy with the regulator, if I switch to 5 cells and start using one. I have always used 4 cell packs up to this point, and have considered sticking with the 4 cell nicads (although using a big 2500 mah pack) and not having to use the regulator at all. Any opinions on using a 4 cell nicad with the Kingcat setup, or should I go with the 5 cell / regulator setup ? The jet will have 4 8611 digitals, and 7 other non digital servos, along with two match boxes. Thanks-Mike Oberst