With 28mm xmax and 17.2 bl, its hard to say the tc2000 is more of a sq sub. I think it plays both roles equally well. Plus they are fairly cheap for their performance, for the time being at least.
Pzaully
Edit: I mentioned before that I dont know how much longer I'd stand behind the TC subs after their price increase. Rather a shame to bump the price that much, though I understand that a business is a business //content.invisioncic.com/y282845/emoticons/blackeye.gif.66a1670f5aaf7f406e783a63e3387dc5.gif