I would say Cleveland and Callaway would have to be the first two companies to look at, but its still impossible to compare. Because the TT's fall somewhere in between the X hots and XHPs, there really aren't any fair comparisons to be made. Taylormade would also have to sneak their name in there, as well as Cobra. There are alot of good lines being put out this year.
Truth. In the end we, the consumers, win when there are so many great choices out there.