ANACS has nailed most of my Morgan submissions, or killed me, one I feel is a lock MS64+ or MS65 came back in an MS62 holder.

(So did CCF on this one). But they can't be beat for
VAM attributions (Thanks to John Roberts) and their grading for the most part is tough yet fair.
PCGS is hit or miss from several years ago, I really haven't sent anything in for quite a few years now. So I can't comment on recent grading standards, but they are the "Gold standard in grading today in the market.
NGC, I'm not a big fan of, and I see more coins that are mis attributed on varieties in NGC holders than in the other TPGs, but as to grading I think on silver dollars they are in line with my grades usually, and do a fine job. I also don't like their holders as much as the other two, they are too big and waste space in the safe and deposit box.
My favorite slab is SEGS (but I'm no big fan of the service) and the older small white ANACS holders, they were great for storage space and looked nice. But I do admit to liking the new PCGS secure holders a lot. The current ANACS holders seem cheap in feel, while NGC's are solid but big.
If I could have all my coins slabbed the way I want - they would be graded by PCGS, and slabbed in old style ANACS sized holders, with top labels like SEGS! That's the cake I'd eat!

"Buy the Book Before You Buy the Coin" - Aaron R. Feldman - "And read it" - Me 2013!
ANA Life Member #3288 in good standing since 1981, ANS, Early American Coppers Member (EAC), Colonial Coin Collectors Club member (C4), Conder Token Collector Club member (CTCC), Civil War Token Society (CWTS) member, Liberty Seated Collectors Club (LSCC) & Numismatic Bibliomania Society member (NBS), USMex, Member in good standing, 2¢ variety collector.
See my want page:
http://goccf.com/t/140440