I've been lurking a bit too long, so I suppose it's time that I weigh on this. Now, whether or not this thread has run its course or not is not a concern to me. I just want to give my two cents.
FreeI've never dabbled in Free. Nothing against those who do, but I just never saw myself as a free roleplayer. I like my RPs to move at decent pace but nothing that exceeds 3-4 pages every day. That's too fast for Tundy.
CasualLike Haley, Casual is my home as well. A majority of my current roleplays, as well as the roleplays I've done in my 5+ years here, have been conducted in casual. Of course, there's a small handful of RPs I've been apart of that were in Advanced. I just feel as though my writing style, expectations, and overall comfortability falls within the casual section.
AdvancedI've dabbled here a few times. Nowadays, there isn't much of a difference than casual. The only significant difference that I've noticed is the overwhelming amount of fantasy and sci-fi games as opposed to the more modern, slice-of-life-y games seen in casual. One of these days I will return to Advanced.
ArenaMy first taste of roleplaying was roleplay battles, which Arena focuses on. And honestly? I would like to return to it someday. I miss doing straight up RPBs. I don't mind doing them in action rps, but just writing up battles and not having to worry about story progression has been something I've missed greatly.
1x1I love the 1x1 section. Some of my favorite RPs have been done within this section/format of RPing. And where groups fail, I can always count on my 1x1 roleplays.
NationI've never RP'd here once. And I don't think I ever will. It's simply not my cup of tea.
TabletopSame for Nation. It's not my cup of tea, so I don't see a point in going to that section.