To the OP, not a lot of love for Montana/Kimber/WIN M70/FNH receivers here as Barbie accessories are not as available as most lessor actions, JMHO!, R 700 costs less and has many more options as do the clones! but usually require additional work ( clones excluded depending on manufacture)
RPR and TIKKA actions require less smithing costs than REM and may be better out of the box, however for me at least the flat bottom integral lug configuration of the MT Rifle/Kimber/WIN M70/FNH along with CRF seems like the better work horse option for all around use.
JMHO! FWIW!
Their are trigger options and CDI does a Bottom Metal Magazine for stocks, chassis options are extremely limited and usually require propriety magazines that strangle cartridge COALs!