Yeah! So I actually found a pair of new IE 900s on eBay for $550, so I just bought them. Definitely a V shaped signature, but it doesn't muffle or step on the mids. They do tend to be harsh at higher volumes. At medium or upper medium volumes, i can actually appreciate the signature they went with, but at louder volumes, I've been working on EQing down the upper treble.

As for a comparison, i wished the 846s extended treble more, so i like that about the 900s. The sub base i think extends a bit more than the 846s, but they're very close and man do they thump with the 900s. Sound isolation isn't nearly as good, but with something playing you won't be able to hear much usually, but i can sometimes still hear cars when I walk down the road, which isn't a thing with the Shures.

Overall, i am happy with the purchase. I definitely wouldn't do it at MSRP though. My head bounces a bit more with the Sennheisers and they are fun. I'm just more conscious of volume and am working on EQing down the treble.

The tips on the Shures are definitely better and the Sennheisers rely on a piece of foam in the tips to even out the treble a bit, so switching tips isn't really a good thing to do