I own both Abolt and 700 BDL, they are both good choices. Bolt throw on the Abolt is very nice but I curse the box mags of abolt after losing the bottom plate twice their design makes me scratch my head and like anything with the golden deer it costs bigtime to replace! Rem 700's fits me best personally, they have their quirks but hey what doesn't. I like the fact parts, etc are easy to come buy and are cheaper in comparison. This doesn't mean they require more work b/c they have been very durable/reliable IME but rather I have tweaked every rifle I have owned in the past number of years in one way or another, due to the shear market share I can find it easier/faster and for less with the 700's.

I never have liked the M77 but also never owned one either so that is strictly personal not functional on my account.

Lots of great choices and really can't go wrong as long as you buy first on fit and then on features. You can rework triggers, bed and pillar actions, install excellent after market recoil pads/stocks/barrels, etc to almost all but if it feels off it will never be your favorite to grab come opening day.