Lately I have run into a few sites that jumped ship from vBulletin(Not a vB hate thread either!) and they have never looked so appealing and I was thinking to my self "Hey this site looks so amazing with Xenforo" and when then I finally realize that they are IPB and it looks so much like xF. Can some one explain to me the difference? I don't recall seeing so many similar features but Ive never had any real experience with IPB(never really liked it). Can some one who owns IPB tell me the difference?