Hisoundfi, what do you like about the DGS100 in comparison to the H3? I'm pretty much in agreement 100% with everything you've said about the DGS100 and even bought them based on your impressions. Right now I'd say they're my most enjoyable IEMs to date. Prior to owning these I'd say the FXZ200 was my favorite as their effortless bass reproduction beats everything I've heard- only thing that could make them better would be the clarity and detail characteristics of a BA...hopefully this will be the DGS200
The DGS100 and H3 are comparable in mid bass presentation. Both are warm sounding hybrids.
Sound quality...
The Sony H3 is superior in soundstage and seperation. The DGS100 is superior is transparency, detail, and treble extension.
Build quality...
The Sony H3 has a better cable that is detachable (and comes with two cables).
The DGS has a better housing (aluminum) as compared to the plastic bulky shell of the H3
Ergonomics...
The H3 is comfortable, but they are bulky, and getting (and keeping) a good fit and seal can be a PITA.
The DGS100 is a pretty straight forward design and can be worn over or under the ear. I can pop them in over the ear and forget about them. They cable is pretty decent and doesn't tangle easily. It's all around easier to use and transport.
Isolation...
Both of these have vented dynamic drivers so driver flex isn't an issue. Also, the vented driver allows a little bit of outside notice to get in. A positive for both is that the bass presentation on both drowns out ambient noise and works great when commuting.
Overall, I prefer the DGS100 because to my ears it sounds like a more refined H3. They don't fall behind the H3 in soundstage and seperation by very much, and pull ahead of the H3 in just about every other SQ criteria.
Also, the DGS100 is flat out easier to use. It's less bulky, and easier to get and maintain a git fit.