It's a tie for the "top" lens - would have to be a 250/5.6 CFi Sonnar Superachromat on EOS adapter (on the long end) vs the 21/2.8 ZE Zeiss (on the wide end). Followed by the 110/2 Planar T* vs 100/2.8L IS. For pure macro, it would be a tie between the 120/4 Makro-Planar vs the 100/6.3 Zeiss Luminar on bellows.
All adapted to use on the 1DsMkIII. L-glass does the job, and does it well. But, as far as for personal shooting and my "favorite", it's definitely Zeiss.
After that, it's probably the Coastal Optic 60 and Hartblei Superrotators for EF mount. Then, would be the 24 TS-E II.