Personal preference, but I've no use for a DM on a bolt action hunting rifle. It's not needed, and is just something to lose or go bad. Some guys love 'em, I suppose.
Could be wrong, but it's my impression that on some rifles, the feed lips are part of the magazine, which makes the action cheaper to make, but might be a problem when you decide to re-barrel to another cartridge, or change to a fixed mag. If you really want to try a DM, I'd suggest getting a kit for a regular rifle so you can switch back.
I don't like DBM either. Seems a lot here have "never had a problem" with a 700. I will be the only one here that has the balls to say I have had problems with them. The little pos they call an extractor is a joke, the trigger is a joke, J-lock (come the fu ck on) and the safety not locking the bolt is (yeah you guessed it): A joke. With this being said, the older Remington 700's were better than the later ones. Good luck with it..