Are the elongated ones normally longer? The round one I have is 28" deep, but I found an elongate TOTO that advertises 28 1/8". I was going to go with a shorter toilet because the tub is in front and there isn't much room, but I can only find a 26.5" that appears to be out of stock everywhere. At that point I guess I'll just get an elongated one if its only 1/8" larger. http://www.vintagetub.com/asp/product_detail.asp?item_no=CST734F01&utm_id=IDK1K
If you are looking at the TOTO lineup, look long and hard at the Drake II and Vespin II. I'd say they are the "workhorses" of our product line. Great performance, lower price point (for TOTO). The Vespin II is really just a "skirted" Drake II. The skirting makes for a cleaner (but less traditional) look, and makes cleaning MUCH easier.