As mentioned above:
-WVM is really good, not as "punchy" as Dik or Acting lessons, but still good
-Dreams of Desire I'll second as worthy of playthroughs
-Deluca family is a definite must play, great renders, solid storylines and character development.
-City of Broken Dreamers is really solid, again, great renders, but not a ton of content. Still worth checking out and keeping an eye on.
-Acting lessons is by the same dev who did DIK, it's great character development, but my experience didn't leave me with a positive feeling. It's *Very* heavy on some things, so just be warned on that one.
I'd like to think "Melody" is a solid storyline and VN. Some of the dialogue gets a bit long, but still solid in my book
Others are:
Freeloading family
Leap of faith (early content, solid so far)
Where the heart is
Halfway house (early content, worth checking out)
Haley's story (I personally love this one)