It seems Zalis suggests the B-A release of both. I'm guessing they released them in H264, will check later.
Almost. OVA is in XviD, TV is h264. For the OVA, B-A's was the only one that was XviD, .mkv, and in full 640x480 resolution. All the others are either .ogm, DivX5, or 576x432. Sadly there is no h264 version of the OVA.
Ftr, the only one I have is Anime-Supreme's...it's okay, but could be better. If anyone's got the zx release, that would be worth looking into. Zx's encoding might have done a better job than B-A, despite being DivX5/.ogm.