Ok. Just got a chance to listen to VSD3 and gave a quick listen to VSD3S and MA750 through my DX90. Listened to a few songs from Iron Maiden's Seventh Son and Senking's Chainsawfish albums.
VSD3 definitely has more bass presence and extension and a bit more mids than VSD3S. Sounds fuller and seems to have better soundstage. MA750 has better bass extension but doesn't have as much mids as either, which makes it sound thinner but with more soundstage.
Whereas VSD3S didn't make my cut for Senking (my test for music with a lot of sub-bass), VSD3 and MA750 do but VSD3 sound better to me due to full, warm sound in comparison to MA750. I also like VSD3 best for Iron Maiden but all three are fine.
Surprising problems with VSD3:
1. Can't get a good seal with stock L tips even though they work just fine with VSD3S. Get a low-level click/pop as seal breaks when I move my head. Tried adjusting fit and reinserting several times with no luck. Tried swapping L tips between VSD3 and VSD3S without any luck.
2. Get some discomfort in right outer ear as where shell rests. Don't have that issue with VSD3S.Can't figure out why I'm having these issues when the shells appear to be virtually identical. Any ideas?
Which do I think I'd listen to more at this point? VSD3.Edited by nmatheis - 7/21/14 at 7:25pm