Thanks guys! Your comments/critiques are really appreciated and have given me some stuff to chew on as well as pointed out a couple things i was already thinking.
The two rhythm guitars are rather similar to each other (identical, almost), which actually was on purpose. I was going more for the "wall of sound" thing more than two distinct rhythm guitars.
the lead is a bit more compressed and has a thinner/brighter sound, but again is a variation on the rhythm sound. i had a distinct lead sound i was shooting for (reminiscent of the late Michael Houser from Widespread Panic), which i hit pretty close to the mark on.......so in order to change em up a bit, i'll need to tweak the rhythm guitars instead of the lead. i can certainly see the desire for contrasting guitar tones--in this case, similar sounding guitars was an intentional "production decision".
as for the actual hook/riff lick itself--it's intentionally in that A blues scale--i guess you'd have to listen to mikey's style to understand what i was going for....but i was also going for some of that Neil Young sort of thing. My initial passes at it actually were 5 frets higher (in D), but it didn't create the sort of tension in the riff that i was looking for it to create....it "got along" (or blended) too well.
the guitars *are* a bit dark and a bit in the background. this has been one of the things i've been learning (fighting?) with my new monitors (ASP8's)--guitars always end up needing to be brighter and more forward than it otherwise seems. i posted this mp3 before i'd done a car or laptop check, and the car and laptop checks pointed this out pretty immediately. this has got to be more of a problem with my room than the monitors. but just about every mix i've done on em, the guitars have needed to come up.
i find the tom petty comparisons rather interesting. is it the vocals? or the "storytelling" nature of the lyric? or the guitars? or the really, really, really simple chord structure of the song?

i ask b/c i never ever would've made a tom petty connection on my own--but i definitely see it!
the BadCo thing, though--i REALLY see that. i was going for that "70's classic hard rock" sound in the guitars, drums and bass. i've been listening to a lot of Neil Young's "Tonight's the Night" period stuff lately--so go fig.
the drums and bass were ok?
thanks folks! i've been trying to wrap up a few more tunes lately (after being nonproductive for months), so i'll post some more in another day or two. again, i really appreciate the comments!
cheers,
wade