I am using this one
SUPERNOVA 250S Fast Cycler
Part Number: FC700
The SUPER NOVA is the most sophisticated battery conditioning system available today at a price one third that of competing products. SUPER NOVA can discharge and rapid charge from 1 to 25 cells from a +12VDC supply such as a car battery or your field box battery. SUPER NOVA is a microprocessor controlled cycler meant primarily for power packs used for power for electric cars, boats, and airplanes. The “super” feature is that the user can store the cycle parameters for up to 10 different battery packs in memory. Just select the memory location for the pack you want and all parameters are there and set without worrying whether you have them right. Function of SUPER NOVA describes the optimum technique used by competitive electric model operators for some time, but never before available in an affordable package. The user charges a pack at C/10 on his overnight system charger to equalize the cells. Before competing, SUPER NOVA then discharges the pack at a discharge rate programmed via the microprocessor to be from 0.5 to 3.0 amps. The discharge capacity is presented on an LCD display. At completion of discharge, SUPER NOVA rapid charges the pack at any rate programmed into the microprocessor between 0.1 and 5 amps until the pack reaches full charge and delta peak cutoff occurs. The unit automatically switches to trickle charge and maintains the peak charge on the pack until you need the pack.
Recommended Accessories: One 201BCB cable that is a 9", 2.5mm barrel cable to two bannana plugs; and a 501MC Versatile Adapter that will allow interface of most popular radio equipment via the above cable. PS2-12US to connect the FC700 to your AC wall outlet for use in your shop.
**just one side note, if you decided to go EP you can still use this charger too! and it can charge Gel Cell too(the one on your starter box). And since it cal also charge from 1 to 25 cells that means you can program it to charge your glow ignitor too.