My Rollei E 36 RE flash guns are starting to fail me. Instead of scavenging ebay for more of the same, I was thinking of finding a different model flash. I plan on using it with my Sputnik 3D camera. So, I need a LOT of power (guide number) and don't really care about recharge time...if I take a shot a minute, it is a lot. Also, I want something really cheap. ;-) Suggestions?