SB-R200 batteries

i used an R1 kit today and fell in love. it'll be my xmas present.
for those that have this flash kit, what batteries do you use for the sb-r200 ? can anyone recommend a charger and rechargable batteries that they have expereinces with ? there are a plethora of batteries on ebay, hoping to get someones experiences b4 i buy.

for those that have this flash kit, what batteries do you use for the sb-r200 ? can anyone recommend a charger and rechargable batteries that they have expereinces with ? there are a plethora of batteries on ebay, hoping to get someones experiences b4 i buy.