Having two 457's a 17hmr and a 22lr I did spend time gathering as much info as I could that would suit my usage of the rifles, this being for vermin. The CZ seems to be a rifle that can be extensively modified. I don't think there is a single part on it you cannot swap out and replace if this is what you'd like to do sometime in the future. The barrels are available standard or Match chambered and various lengths but not all may be available in Match chamber across these various lengths. And not forgetting those with iron sights. The availability of stocks in the 457 offers quite a good choice also. From my findings the standard chamber can be less ammo fussy and the Match would need time testing different ammo to narrow down the best that suits. It is really down to what you tend to use it for and personal preference but I don't believe anyone would be disappointed with any variant of the 457 they decide on.