This is what's most popular out this way. Move 14-16 bales at a time with one tractor. No need to have the loader handling bales a couple of times. Really user friendly. We have a 14 bale model, that's around 18 years old & still picks 2500+ bales a year with very little that goes wrong. These two units were originally designed by a guy 10 miles from my place. He then sold the patents to Highline & Bourgault.

 http://www.bourgault.com/balemover/rbm1650page1.htm

http://www.highline.jbeck.ca/en/node/30