So i am toying with the idea of off camera wireless flash capabilities and want to get only ONE of the following for now. After this purchase, the next purchase will be who knows when. Currently I am using 30D + 580EX II. Budget is around $100, definitely below $200. I can handle manual flash for the most part, so ETTL is not a must, in fact not heavily considered. I will be using the setup for indoor and outdoor portraits.
Now here is what I considered.
A pair of Cactus V5 for now: $60 + shipping, pro: range, versatility, maybe cost; con: only one light for a while.
Yongnuo YN-560 in optical slave mode: $70 off amazon. pro: power, power, power, and also two light setup; con: questionable quality per Strobists' website and all the non zooming talk, optical slave requires line of sight.
LumoPro LP-160 in optical slave mode: $160. pro: sturdy, two light setup. con: pretty much same as YN-560 minus reliability issue, but highest cost by far.
Here is an interesting thought experiment:
Say the YN-560 is 50% reliable in one year and the LP-160 is 90%. With the money of one LP, I can buy two YN. After one year, my chance of having one working YN would be 50%, and two working ones would be 25%. So I would have a 75% chance of having any working YN flash at all. With LP, I have a 90% chance of retaining a working flash. For about the same money or less, YN isn't much of a bad deal. However, this did not factor in weighing the event of having two working flashes heavier than the event of having only one. If I do, then the YN is really looking good. But then we start consider the LP has two year warranty from a US vendor, my head is about to explode!
So please, someone come enlighten me, what would you do in my shoes. Oh, btw, I am considering Nikon SB-26 at the moment because the price has been driven pretty high on ebay(good ones at $150-$180) and good ones are hard to come by.

