I bought an X-bolt last year and have some experience with an A-bolt. Let me say that the X-bolt is very user friendly. It's a very natural shot, as my father, who never switched-off the safety on mine, shot 2 deer the day I gave it to him in the field in exchange for his less appropriate 243. One he shot trotting at about 100+ yards. This is a 77 year old man who has trouble with rifles fitting him. He loved it and if he wasn't penny wise and pound foolish, would have bought one over the summer.
I find the X-bolt a lower-profile, lower center of gravity rifle. It is much more ergonomically agreeable and extraordinarily comfortable to shoot. I understand that some people get freaky about the removable magazine. Get 2. Better yet, keep the damm thing clicked into your rifle until you take it hunting. At the worst, you have a single shot.
The bolt handle release is super-natural and very nice.
After buying it in a pinch of sorts and not having had long to consider it before-hand, it has become my go-to, grab-and-go, bang-stick of favor. I have a load of confidence in it.
It hasn't been as clover-leaf accurate as I had hoped. I futzed around with a lot of different hand loads, but nothing gets down to 1 inch at 100 meters. But it's better than my M77 7X57. The X shoots about 1 1/4 groups. Maybe a super-expert at reloading might help get that spread down.
My next 2 rifles, IF I don't buy another shotgun, might be a BLR 358 and a good possibility of a 7 WSM in Xbolt.