Hi, I decided to buy an off-camera flash unit with my tax returns. I've done my homework, and researched flash units, but I still don't really know what I need. :meh: I was thinking of getting a caple, and the cheapest Canon flash unit, but is there THE flash unit that most people have? (example, like the 50mm 1.8...it's so cheap, and nice everyone has one) I just want a good off-camera flash to experiment with. My budget is $150, and it has to work with my 40D (obviously). I don't really care about the automatic metering and stuff. I just need something to get the job done. thanks for any help!