Stayed with the regular 140 ab's this year as I had a couple of hundred rounds worth of groups proving their worth in my stw. I brought a box of 150 ablr's with, but couldn't bring myself to move the sights and use them. I just haven't put enough of them through my bbl. to prove them yet.
As to cost, you get what you pay for to a point. Some pills are just over priced, but I don't think the ab's are for the most part. Sierra and Hornady are better value (and I shoot a BUNCH of them) but the Nosler offerings shoot very well in my stw. I'll pay the piper for a 1/2 moa rifle shooting 140 grain pills with nearly a .500 bc at 3400 fps with the bullets actually holding together when I pop a critter with them.