That looks like a low current pack. Generally that seller is not a super great place. This is what you really want: http://www.cheapbatterypacks.com/CustomPacks2/CustomPacks.aspx?CellCount=10&Cell=ELITE1500A&Config=ds&Wire=14A&Plug=FDEAN&Upgrade=n
Cost is a little steep but that is part of the problem with NiMH. Similarly, LiFePO4 is not very popular and costs continue to be high. The cost of both the pack and the support gear could be cut significantly if you used LiPo.
IMR 14500 continue to be an option (especially if you mod the cell holder for lower resistance) if you want to share batteries with a Stryfe or the like.