Im thinking about closing the deal on one of these rests, and where it may seem as a small accessory to some, its more like an investment to me....

How truly good are these rests, not based on the fact that there new and cool with a whole new concept of drop-aways, but rather, the issues of how well they perform, group, and such.

I know they stay on the arrow 60-70% longer before actually dropping away. This seems like a good thing. Are there any cons to this rest?

I currently have a cobra diamondback dropaway, and while i was influenced to get it rather that the 360 last year when i bought it, i am fully pleased with its performance, after about a day of tinkering.
What difference will i notice between it and my current one.

Is this rest the best way to go for me? For hunting and some 3-D on the side thati really enjoy andlooking to get better at. I just want to make sure im making a wise decision in this and not just wanting to hang with the cool kids.