I voted "other". The most important thing to me is that I feel a sense of coziness, of hominess, of inviting warmth. Therefore, I tend to gravitate towards smaller houses. I'm allergic to these humongous Bel-Air-style McMansions with throne rooms and mannequin rooms, hot tubs, dancing girls, long isles of display cases and high walls of identical storage containers. Give me an ivy-covered cottage by Korana or Khettiana any day.
Amen!
I also love smaller houses that are long on charm and character, short on pompous bloat masquerading as "amenities". Khettienna, Garnet, Yevic, WhoGuru, and StapleNinja are among my favorite interior designers for Oblivion. I must also mention Radicus's "Dimensional Grotto"- one of the prettiest and least pretentious house mods I've had the pleasure of using.
Addenda: I voted "other".
And COBL support is nice, but not necessary (at least for me), as it's easy enough to add myself.