I agree that you have "a nice group of good shots". And, to me, that's the issue--they're good, but they're mostly individual shots. I'm missing context, flow, the feeling of what it was like to actually be there. Especially for rock, I'd rather have shots that aren't technically perfect, but that make me feel the energy.
I realize this is a portfolio, so you're picking your best. But personally, I'd like to see a subgroup of maybe ten or so shots taken at the same gig, especially with a few wide shots included. Maybe add 5-10 more shots from the Elephant Keys shoot or something.
You clearly have the technical ability. For me, it's just missing the emotion. I want my reaction to be, "Wow, that looks like a hella good time!" Instead of, "Wow, that's a hella good picture!" Right now, it's the latter, which, I'd like to stress, is not a bad thing. Again, I think your pics are very good. I just think it would be even more awesome if I got the feeling that, "Those guys effing RAWK!"
And what's worked for me was to start working regularly with one band and then either get referrals through them and/or meet other bands at multiple bookings who like your work.