I'm no expert on Savages (or much else

) ....but my guess is that Savage had been riding the Mark II/93 a little longer than necessary, and it was time for a fresh design. I've had a few 93s, and 1 x Mark II and while I'm tempted to say they aren't as accurate as CZs, the truth is...I never shot my Mark II with anything but garden-variety 22 SV. I do allot more experimenting these days.
Could also be that the black, plastic stock on the entry-level guns might have been the biggest POS stock ever put on a rimfire. And that's coming from a guy who had a couple of them. My Mark II was an FV-SR, definitely not an accurate rifle compared to the CZ/Anschutz it shared space with in the safe...but man, I really loved shooting that gun. I never fully grasped why (chamber?) but Savages always seemed to easy to cycle, not sure if that was extra slop or what...but it sure made for a pleasant shooting experience anyway. When I got rid of my second last Savage rimfire, I swore I wouldn't bother with Savage 22s again but honestly...the B22s really interest me. Savage seemed to move away from their ugly polished/bluing jobs and towards a satin finish in recent years, it's had me reconsider them a number of times. Then the B22 came out with better stock geometry, a modern look, nicer bolt etc...and well, a new Savage might be on the list. I know they added a 17M2 to their semi line (I imagine it'll have collector value one day) but I'd honestly buy a new production, heavy barrel 17M2 if they came out with one patterned after the B22. Granted, the only guy I ever knew with a Savage 17M2 had real issues with it, and could barely give it away.
So, are the B-series better? They're "supposed" to be, and I may try one just so that I can scratch the itch. I (personally) wouldn't need one in 22, but might consider one in 22WMR. That caliber demands that you lower your accuracy expectations as it is, so a B series Savage might be a good fit. I wouldn't use 22WMR enough to justify a CZ or Anschutz.