Well, the bass on the 7s outperforms the 716s, even modded. It's not flabby, either, like most cheap phones. Also, it's more comfy, mainly because it's a canal phone,. and doesn't go as deep as the 716s (I use the olives on the latter, and they aren't too bad. The RE2s are a nice phone, but I always thought they needed an amp, even the E3, to sound their best. Good detail, but sounded thin without an amp. Maybe I just could not get a good seal. My daughter uses them with her Touch.
But value-wise, the $49 is tough to beat, for pure listening enjoyment. The 716s and the RE2s both hunger for an amp, but not the 7s. The 7s sounded full out of the box, very musical and warm, but not with rolled off highs or anything that drastic, and I haven't even done any burn-in with them. I have to re-read HPAddict's review and see if they require burn in, in fact.
Major amendment:
I want to be honest about something here. I didn't even try the stock tips, cause I hate those cookie cutter silicone flanges that come with most canalphones, they just do not work for me. I immediately put on a pair of Compy T400 foamies. So that's how I made my judgment of these phones. On a whim, I tried all the stock tips, and I could not even come close to the full, bassy sound I got with the Complys. Not even close.
So my comments on this phone should all be tempered with the fact that I needed to use the Comply tips to get the max sound quality from them. Otherwise, I would not have rated them so highly. YMMV. I am not saying Larry's assesment is wrong, I am just saying I needed foamies to reach the same conclusion.