The sling rubbers on my GotG Prem are beginning to break down and fray. I obviously have to replace them, but I'm thinking of replacing everything. I'm not looking to change the gameplay, but I wouldn't mind adding some color. I've read a lot of threads about this topic, and they are full of "I like this" opinion. That's fine, but I'm just looking for factual differences of the products available. That way I can decide which I want to try.

I've read that there are rubber, urethane, poly, silicone and maybe more...Some of the things I'm wondering about are listed below. If you can think of other factual differences, please list them.

What are the bounce characteristics of each?
What are the trap/catch characteristics of each?
Do all types come in colored versions?
Do all types come in flipper, post sleeves and rings, and sling rubbers?
Are the types specific to a certain application...opposite question from the one above?

Looking at kits, but willing to buy individual if different characteristics sound like I'd like them in different areas. Thanks for input!!