You really won't regret getting it provided you know it's limitations (like any round has) and the 336 Marlin is a handy, well made, lever gun.
It's one of the first rifle rounds I ever reloaded for.
In my Contender carbine and pistol and the 336, I've dropped a number of eastern woods whitetails from 30 to about 130 yards and never felt lacking in the power/accuracy department. Are there "better" rounds? Sure. It's basically the whole "package" in the case of the 336 lever gun that sells it to me. The Contender has strength limitations, efficiency considerations to be dealt with and the 35 Rem is a very good cartridge in them within those parameters.
Have Fun and good luck with your choice.