I have a stihl ms 310 with a 20in bar, I been looking online trying to find a cheaper place to purchase cains for my saw, My local dealer wants about $ 28.00 bucks for a yellow tab chain, I was looking at the oregon brand full chisel chains for my saw and they are half the price of what i have been paying. my question is are these oregon chains good chains and will i be able to put a oregon chain on a stihl bar or will i need to purchase a oregon bar. were do you guys buy your chains online any information would be of a great help.