love the 57, but..
been using the sm57 to mic cabs for a while and it works nicely once you get it pointed at just the right spot. However, I just picked up an E609 and I am very pleased. I just slapped in front of the speaker and I was quite happy with the results (compared with what I've been geting from the 57s). I'm certainly not a pro, and I'm sure that some folks will be rabid in their disagreement, but I like the E609 because it seems more idiot-proof (only an idiot like me would know). Also, getting the new mic allowed me to put one of my 57s on a tom where I previousley had a crummy clip-on.
Anyway, I used the Sennheiser on a 4x12 and a small combo amp. I think that this mic could be useful to someone who wants to spend less time experimenting with placement, and more time rocking out.