I said both 3.5e and 4e, although that's not strictly true. Right now, we're playing 3.5e (only). However, we have played 4e quite recently, and will do so again. It's just that we only tend to keep one campaign going at a time, and for the moment it's 3.5e.
I'm also working on a homebrew "not-quite retro-clone" that I'm hoping to eventually use to replace 3.5e as my edition of choice. (I daresay the other DM will probably stick with 4e; that's his call.)