I hate to jump in here so early, but I know I'm not going to have time to listen to the mixes critically later in the week. It was really great listening to these; a fantastic learning experience. Everybody does a little something different that you can take home from their mix.
Here's what my absolute-amateur ears tell me. Take it all with a grain of salt, though, as I'm not a mixer by anything other than aspiration, and my ears are a bit fatigued after hearing so many of these tonight. So apologies if I'm less than helpful at times.
In alphabetical order:
Adam Miller: This is virtually the mix that I wanted to make. The drums, in particular, are nice. Bright, crunchy guitars; I like these, too. Drums are tear-your-head-off punchy. As iCombs says, perfect, vocal placement, although I'm not 100% behind the delay. I like this mix.
Antman: Nice and bright, but not too bright. Vocals are nice and present, although I'd roll back the delay a little bit overall, and bring them up during the breakdown. I'd like more, or punchier drums, at least kick and snare. Guitars sound great.
Ator: The first thing that jumps out is the disorienting stereo separation. Wow, those guitars are fuzzy. I'm actually feeling a bit seasick this is so wide. It also feels a bit bass-heavy, although that could just be a trick of the super-wideness. I do dig the sound of the snare, though, and especially like the "sucking in" into the break. The vocal arrangement at the end is nice, too.
Boedoconstrictor: Good balance between the rhythm instruments. I could use a little more of the vocals in the first verse. Digging the snare; drums sound nice overall. I really like this mix, although I'm not crazy about the vocal treatment.
cymatics: Wow, this is loud. Lots of grit on the vocals; I like this. The toms seem a bit flabby, and the overheads are a little loud and bright for my taste; okay, the drums are just crushed, I guess. Guitars are really in-your-face: nice. Overall, it's maybe a bit too bright, gritty, and loud for my taste.
firefly: Interesting vocal treatment; might be a little too loud. I'm not sure how I feel about all the reverb on the bass. Drums are a bit buried. I don't know about this; as iCombs noted, the stereo imaging is crazy. I just switched to headphones to try to figure it out, but it's still just a little weird to me.
Grant Richard: Are my ears just getting tired, or is this pumping like crazy? I like the contrast in the vocals in the beginning. Drums sound great to my ears. The guitars are a bit too big for the drums, the snare in particular.
Greg Thompson: Great balance. I dig the present, dry vocals. Everything sounds really great together. I really like this mix. This is, much like Adam Miller's, the mix I wish I'd done. The snare sounds maybe a little honky in the breakdown, but overall sounds great. Not sure about the guitar (bass?) effect at the end.
iCombs: Whoa, lots of top end grit on those vocals; maybe a bit too top-heavy for me. Bass sounds pretty nice, but gets a little buried near the end. Guitars are way-scooped, or at least seem that way next to the bass; not sure I like that. Background vocals could maybe come down a little in the chorus. Snare is very nice.
JTexas: Bass sounds great. Not crazy about all the delay on the vox. Good balance with the BG vox in the chorus. Guitars are a little dark for me (even though I like em dark in this song), though the bass sounds good. Bit dark overall, though, maybe a bit muddy with all the gits and bass together.
maxim: Maybe too much grit/volume on the bass. Drowns out the drums at the beginning. Great vocal treatment. What happened when the guitars kick in? I expect to get kicked in the teeth, and it's a bit like they're playing in the next room--with the drums. This treatment on the breakdown guitars is ... unique? I really need more guitars in this mix.
podgorny: I like how dry and direct this is; drums, bass, and guitars sound great. Especially the bass. Wacky treatment on the BG vox! Lead vox could come up just a bit in the second verse. I really like these drums. The snare is, as iCombs says, loud, but I like it. I like the vocal edit at the end; sounds like there'll be a few mixes with that edit, and it's a good one. This is a good mix to my ears, and would be better with just a little more of the vox.
RKoehler: The drums really pump, or maybe it's the whole mix. Guitars are are very narrow, in contrast to the fairly wide drums. I like the vocals a lot, really nice sound there.
Rob Darling: Digging this mix, great sounds. Snare is fantastic, love the drums. I could use a little more guitars overall, but the tone is great. The overheads get a little out of control in some places. But I like this mix.
Scott Selfridge: More gritty vox; I like these. Lots of bass; the toms are kicking me in the chest. The first snare edit made me keep rewinding to figure out what was "wrong." Vox are a little quiet in the pre-breakdown (?!) -- basically inaudible on my monitors. My biggest gripe, overall, is the vocals.