I can't remember where I saw the info, but the Choate's are designed to specifically have a gap at the rear tang on the Savages. The newer model Savages tend to have a larger gap when mated up with any of Choate's stocks where the old Savage actions tend to have a slimmer gap. But it is with Choate's intention that there is a "free float" at the back. They actually advise against bedding that particular section.
I agree the stocks tend to be a little heavy. But a heavier stock also equates to lesser recoil. Granted a VERY small reduction in recoil. Still, as a larger guy myself, I don't mind the extra weight... and personally I find the stock to be supremely rigid, durable and comfortable to shoot. I shoot a Savage 111 300WM on the Choate Ultimate Sniper and I have had nothing but good luck with it. For the prices, I would strongly consider Choate. However, if you have the scratch for something better by all means opt up, I mean, as much as I love Choate, they don't compare to something like McMillan.
Hope this helped
TK