I forgot to mention Alice in Sexland, which I really enjoyed story-wise as well. And Spunky Knight (the first I saw) and Secret Plot (the one that got me hooked).
I'm quite partial to Black Dog's works, especially his Sailor Moon doijins.
The 'Submission' series is too much like a Sailor Moon episode with sex, though; I'm more partial to stuff like 'Pearl Jam' or 'Red Hot Chili Peppers' (yeah, he named some of his works after U.S. bands).
I don't havy anything here with me to show, but I'll say this: he knows how to draw brests! 0_o
Hmmmm So far I favs are
IF 02(the one with Evageline from Negima)
The Smile within the Eyepatch
Futari Ecchi(Its more to a very detailed guide about sex,plus interesting story)
Anything from Kisaragi Gumma
Meh. the first couple of the Ayanmi doujin were great. As the series got older Rei's anatomy gets weirder, and by part 5 her body borders on the grotesque.
My favorite doujin would be PPG/Dexter by Bleedman. Almost makes me wish he did hentai.
probably because most their work have the most passionate and romance sex without variety like bdsm, tentacles and even anal (well, they probably do anal but i dont remember one). And most important is, i like their drawings and characters
P-forest's Mai-hime doujin series is awesome ( Midori's one of the greatest ever, also she has my favorite hair color :P)
Also Kisaragi Gunma's work and witchcraft is also hot.
I love all the kisaragi gunma's work and warau kangofu of course',,, but for story line i prefer RETAKE and studio kimigabuchi's works,, anyone agree wif me ?