I know this probably comes off as stupid, but, OP, considering you're going to college, I would actually say look into some custom IEMs. Not sure what your living situation there will be, but if you're in the dorms, the isolation of an IEM will be a big positive and you won't bother your roommate if you have one (open headphones would bug me just as much as PC speakers and even regular speakers not cranked up in a dorm environment). Plus you'd have some great portable headphones for walking to class/studying in the library, etc.
I think their sound would also be closer to the Grados, and offer the better precision and other elements you're looking for. Soundstage won't be as good, but I'm not sure how much that'd be an issue coming from the RS1i's (I'll be honest, I don't know their exact sound qualities).
Ok, I reread your OP and saw the music you listed. Oof, sorry, I don't know how you can listen to Breaking Benjamin on the Grados (I'm assuming you're probably more into post-Saturate, and if you're specifically talking about their most recent album then yikes). In fact, on second thought, I really don't know if I'd recommend custom IEMs, as modern overly compressed rock (in fact, specifically the most recent Breaking Benjamin, Alice In Chains - Black Gives Way to Blue, and heavily compressed metal) didn't fare that well on the Westone ES3X I had. They really showed how bad the compression is on them. Then again, I didn't like the Breaking Benjamin and Alice In Chains album much more on modded W5000s either (I recall the W5000 and RS1 being compared but don't quote me as saying they're similar) so it might not be that bad for you.
Personally though, a closed headphone would be a must for me in a college setting.
