My son has a Diamond Infinite Edge, which he has been shooting on and off for a few years. My brother wants to get his boy into archery, and I thought about maybe selling him my son's bow if I could make an upgrade. I'm not sure if there is much of an upgrade to be had at the $400 price point though. He's skin and bones, so I have to keep the bow weight down and the lower end of the draw weight needs to be 30# or so. I've taken a peek at the Mission Radik and Hammr, and the Hoyt Fireshot, and PSE Uprising. Are any of those (or any others) definite and substantial upgrades to the Infinite Edge?