I'm trying to decide whether to buy a Cooper rimfire or centerfire. I have several of both in other brands and have been curious about Coopers. My question for you out there who own both, do you like one over the other? if so, why? I'm particularly interested in .223 and .17 HMR, especially the Model 21 or 57. I think those are the ones with the broad forearm with holes in it. Let me know what you think, please.