I second the Viper PST. I've been a Leupy buyer for years and tried a Viper, no more Leupy's. You can't beat them for the price. The PST is a bit heavy, but then so's the Leupy and everyone else.
Interestingly, I'm about to mount another on a Savage 11-111 LWH in 300 WSM
with Talley one piece base. I'm planning on milling the stock Talley base (0 MOA) to 20 MOA which is no biggie. Just a matter of ball milling the correct receiver radius in the base at the correct angle (using a sine bar and gage blocks to extraploate the angle) which in the case of the Talley is 9 degrees 30 minutes.
Talley will custom mill the base to your required MOA cant for an additional machining fee BTW but I have the machinery so I'll DIY.