The first one has too much sheath and both have too much excess leather up front. Just my 2 cents!!!
I guess you can tell I'm not a fan of Beefmasters. I recall you sell freezer beef so I would recommend that you stay away from any brahma crosses like Beefmaster because they will negatively affect tenderness.
Additional factors affecting meat tenderness
1. Breed type
(Brahman, Sahiwal, etc.) breeds tend to be tougher than Bos taurus
breeds (Angus, Hereford, etc.). Bos indicus
has greater amounts of calpastatin, a protein that interferes with postmortem degradation of muscle.