to answer your question, the elite and true rc packs are good packs. Unfortunately resale isn't great, look at hobbycity zippy prices and that's about what you can get.
IMO i would sell the maxamps pack and never look back. The old 2p packs are notoriously under rated. They sell well on e-bay and traxxas because of the 8000mah capacity. Newbs like big numbers. The "c" rating just isn't up to par.
The first two are okay, the MA not so much
