I am new to this sport and have a question re guarding bags and rest. I have noticed there is a very wide price range in rest and bags. rest from 40 to around 1k dollars. bags up to and around 500.What is the difference ? stated in MOA. Let me explain my question better, I know that a 1000 dollar rest is of better craftsmanship and material and will be less likely to break and leave you with out a rest. But how much better can you shoot off a 1000 or 800 dollar rest than a 40 dollar rest? I also understand the co ax rest is much easier to get on target and therefore faster but how much better is the group going to be? and why will the small rest not shoot as well will it not tighten down as much are they to light? what do you look for in a rest and bags front and rear? thanks in advance Buddy