RE: New Release...Scott or Jim Fletcher?
A buddy of mine has a Rhino and loves it. I have shot one quite a bit and like it, though I don't own one.
That being said, I use a Fletcher Fletchunter, and like Matt and his Rhiino, I have a gazillion shots on it and it just keeps on going. The Fletchunter works just fine with a loop. I have never used a Jim Dandy, but if it has the same Fletcher quality, it should be a fine release.
I bet you can't go wrong either way.