I think Browning made a marketing mistake. When they redesigned the A-bolt, they should have called it the A-bolt 3 not the x-bolt. And then they could have called the new cheap piece of junk the x-bolt instead of the AB-3. Was disappointed that the redesign didn't seem to do much except for increase the base price of the gun and then they filled the gap with junk to compete with everyone elses junk.
That doesn't change my opinion that the X-bolts are nice rifles. I just think you can shop for other options now.
OP seems to be looking at higher end (priced) guns. So, I agree with him that the Sendero is a nice rig, longer and heavier weight barrel than most other options is nice. I know two owners of the new 700 Long Range and they are very pleased with them though they are kinda ugly. Both guns seem to be shooters though neither is really broken in yet. They also offer a longer and heavier barrel than most factory rifles and a rock hard synthetic stock. My plan is to buy one to put under my next high end scope purchase.
Another piece of advice is if you have a budget for the new rifle, save on the gun and spend on the optics. A Sendero rifle with a cheap Simmons scope would make me sad...