The Tumi 2661 or 9661 (Ballistic Nylon and Leather, respectively) are worth checking out.
I’ve been using the 9661 with my SRX77 for the past year, and it fits perfectly. I put a friends TR2A in a few months ago to check for fit, and it was also perfect. It would have room the extended battery as I recall.
Additionally, it has a decent amount of space for accessories, is expandable and has a space for some papers, has a front pouch with keyhook and a place to put a cellphone.
It also has a neat method for attaching to a roll-aboard carry-on. Simply unzip the top and bottom pocket on the back, and slide the pocket over the roll-aboard arm.
It’s a bit pricey, but worth it, I think.
Unfortunately, they’re discontinued. You might find them through froogle.google.com, Tumi outlet stores, or on eBay.
Mine was $285.