This seems the best bang for the buck right now. Barring any specialty cells that will be made in the future should these things sell like hot cakes.
3s 20c 11.1v wired in parallel for 3200mah. Winner winner chicken dinner!
http://www.hobbycity.com/hobbycity/s...idproduct=6539
For Nimh's this seems the highest capacity so far for 2/3a
http://cgi.ebay.com/INTELLECT-7.2V-1...QQcmdZViewItem