I use a one piece IBA mount. It is sturdy and the rings are brazed on the mount. I have not lost the zero with it, for all of the times it has been dinged and roughly handled. The mount completely clears the action (it is on a 700PSS) and does not interfere with using the rifle. Some good one and two piece mounts are now installed with extra minutes, so you will be able to shoot longer distances and still have some clicks left on the scope.
For a two piece mount I would suggest Leupold Mk IV bases. FWIW, I would stray from the Leupold one piece base with the windage screws. These screws can come loose at the wrong time, and I have seen rifles with these mounts top out at 500 yards.