I had a Tamron 24-135 on my old Dynax 5D.
I am now using the same lense as well as a Minolta 17-35 (Tamron made if I am not mistaken), a Minolta 50mm 1.7, and a Minolta 50mm macro on a Dynax 7D that I bought last year.
I have to say that I have had a few problems with the 7D, following some damage in the luggage on a trip to Singapore. But it is now working fine, and I am rather happy with it :)