SirPrimalform: I had been finding IR better than HIB, but I think IR have lost it a bit recently. I'm surprised to say that I think Groupees have been the most interesting to me recently.
Actually, now that you mention it, I'm inclined to agree. I didn't think of them. I've been finding the music and short films that Groupees bundles with its games particularly compelling, and they've been doing an interesting mix of stuff.
The only complaint I have is their inconsistency regarding DRM (they could, for example, have included the already existing DRM-free versions of Patrician 4, Blood Bowl and Drakensang), but then, this complaint can be levelled at Indie Royale (and now HIB as well).
But they really did a top job with their Sherlock Holmes bundle. I actually had most of them on Steam, but I bought it just for the DRM-free versions and a few of the games I didn't already have.