Moderators...
S.O.S. 
Please find out ASAP what the difference is between the two stables? The obvious differences are how much Farm Cash each one costs, and what they look like. I'm thinking that is the whole difference, but just in case one holds more horses than the other... or, like the two flour windmills, one stable produces more product (or faster or whatever) than the other...
we need to know!