If you've got mild tennis elbow already, I'd move away from all of these entirely. They are all very head-heavy and stiff frames. That is a terrible combination as far as TE is concerned.

I would actually suggest looking for a more flexible frame. Stiffness rating in the low 60's would be fine. And I would also suggest looking for something a tad heavier, but with head-light balance and a lower swingweight.

Something more like this one (if you want to stick with the Head brand):
http://www.tennis-warehouse.com/descpageRCHEAD-HGRADT.html
From other brands:
http://www.tennis-warehouse.com/descpageRCWILSON-KTTFX.html
http://www.tennis-warehouse.com/descpageRCDUNLOP-D4D3T.html
http://www.tennis-warehouse.com/descpageRCPRINCE-PO3HS.html
http://www.tennis-warehouse.com/descpageRCVOLKL-VQS.html