I nearly always opt for the H S Precision Sporter stocks for my Model 70 builds, they just seem to 'fit & feel' the best.
Have used a few McMillans, but the 'feel' is different to me.
Really it comes down to what YOU like, for me, the stock dimensions on the H S Precision stocks feel the best.
Your opinion may vary.
Ended up with the Bell and Carlson ultralight. Glass bedded the recoil lug last night and put it all together today. I'm pretty happy with how it turned out to say the least.