The Savage rimfire guns are made in Lakefield Ontario and are an upgraded version of the former Lakefield rimfire. All of the actions are basically the same, and you don't get a better action when you buy a more expensive gun. If accuracy is your interest, then make sure you get a heavy barrel. Doesn't matter if it blued standard steel or stainless steel. The difference is cosmetic. I like the barrels that are about 21" long. The extra weight makes for better accuracy. When Savage bought Lakefield, they fitted their AccuTrigger to the Mark II models. They are very good, and with some tuning you can get the trigger pull down under 1 lb. So basically once you pick a Mark II and a heavy barrel, then the only difference in the models is the stock.
I believe the most basic Mark II and least expensive list price that meets these requirements is the
Mark II FV. The only issue is that the plastic (often referred to a Tupperware) stock is not great. The next step up is the
Mark II BV. It has a laminated stock which is quite good, but can be improved with bedding and pillars. What many of our US friends do is buy the FV model and replace the stock with a Boyd's stock for them at a $129 US cost. One strategy here in Canada is looking around on EE for the gun or a stock.
This said shop around for specials. Sometimes places like Cabelas and Wholesale have special package guns that are a good price. Just make sure you are getting a 21" heavy barrel and a Mark II version with the AccuTrigger.
As for accuracy I get under 1/2" at 50 yards with good target ammo. With top end target ammo it will shoot down to 1/4". A friend has an Anschutz Sporter version and I can shoot quite competitively with that gun, especially with high quality target ammo.
Hope that helps some,