RE: reached half a decision need the other half
i would say go for the 450marlin. sight it in 2" high at 50yds. it wil be 2" high + or - and dead on at 150yds.
if it never makes it and they stop making ammo for it just trade it in for another gun in the future. i am finding out there is qiute the ammount of people who have them and love them.