I've recently bought the audiophile version of BIAB 2011 and I'm having a great time exploring the many new features and the realtracks integration with garageband....
I should mention that I bought the very first available DOS version of BIAB many years ago, and I had also owned one of the first couple of Windows versions, but I'd had a period of not using the program for the last few years (I'd been using real-time rhythm arrangers) I've now gotten into more home recording and find that the new BIAB will be a great asset (especially when I can't find a real player to come in and do a track!)
I've always been very impressed with both the product and the customer support and communication.... I think it's one of the best software experiences I've ever had...