Replying to Best DSLR grips/stabilizers for a good price

I have been filming with a gopro hero 3+ silver for quite some time now and really want to step up my game while filming. My friend has proposed we use his canon eos rebel t3i but from past experiences with this camera it has proven to record terribly shaky footage when handheld. I have been looking at camcaddies but feel that they are only made for holding and not stabilizing the camera. Also I have seen plenty of footage from glidecams that looks amazing. Are they worth the price? Is there any middle ground for stabilizers as far as price and quality goes? Would a camcaddie stablilze the camera at all?