Hello all, So I'm in the market for a nice macro ring flash for my camera. I did some hiking last weekend outside of Portland and lost some really great shots due to the weak flash on my 500d or while trying to keep my hand steady while trying to increase my DOF. I mostly shoot still life but I occasionally try to sneak up on various insects. I don't like using tripods or monopods so a ring flash seems like the answer I'm looking for. I think... I'm assuming that by adding a good ring flash to my 100mm macro lens that I'll be able to boost my DOF and increase my shutter speed while still shooting without stabilization? I'd like to be able to snap a shot of an insect without having to find a log to lean on or break out the Joby (while all the time hoping the insect doesn't fly off). So I've been looking at a MR-14EX, but, wow. Ugh, a tad expensive. I've looked at the Sigma alternative and while cheaper, it isn't cheaper by much. Advice? Thanks!