Another vote for barn 1. My current barn has 10x10 stalls, which is smaller than I prefer, but the horses are usually turned out for 15-16 hours of the day. My horse is… pony-sized, but the rest of the barn is all 15.2+ hh. Having come from the land of 0 hours of turnout, I would want one with the most possible.
The second option only seems to have two pros (closer to you and a slightly bigger stall). It costs more than the first option, feeds worse hay, has iffy grass turnouts, and has minimal turnout.
The third option is also a no. It costs the most, is the furthest away, and seems to feed the least. I’d be concerned as to WHY the barn constantly switches hay (Is someone not keeping inventory and they ran out? Can they not get a steady supply of hay?). I’ve boarded somewhere where dinner was fed at 4:30-5 and most horses were usually done with their dinner by 8 pm, if not earlier. Breakfast wasn’t thrown until 7 am. Many boarders came and did a post-dinner feeding and/or used nets to make the hay stretch longer. I assume that horses aren’t turned out at night so they’d just be inside without food?