I've owned all 3, and currently have a 7600 rifle in 35 Whelen.
For a dedicated deer rifle where the bush is a little thick, I'd chose the 44 Mag Ruger Carbine every time.
Short, light and very fast, particularly with a receiver peep sight ( or 1-4x scope ), they are a joy to carry.
Where I've hunted, in 4 different camps (Almaguin Highlands, Parry Sound District, Muskoka & Kawarthas) it's rare to
ever get a shot at anything over 60 yards. Dogging & Still Hunting, the Ruger would be my first choice, the Remington pump second.
Nothing wrong with the Marlin, or the 30-30 for what you want, just my preferences. My first deer was killed with a 44-40 Winchester rifle, and the most recent with
a 257 Roberts. The longest shot has been something around 75 yards, the closest, maybe 3 or 4. The 30-06 in my opinion is really over-powered for this kind of hunting,
but the Remington carbine, a very handy rifle well-proven in the deer woods.