I have used and liked both. I mainly use the .30-30. However, I live in hilly woodland areas and a shot over 100 yards is very iffy due to the layout of the land and brush. I use it because it is more compact and a little lighter than some other rifles. I would venture a guess that in this part of West Virginia it has probably killed more whitetail than any other caliber. I have known some people that have used it for black bear and even wild "hawg." (I wouldn't, but I am not that adventerous.) While I like bolt actions, the lever (for me) is a little easier for a follow up shot as I can work it a little faster without loosing my target in the scope.
If you go with the lever .30-30 and want to use a scope, I would go with the Marlin 336. It ejects from the side unlike the Winchester 94's I have seen.(The 94 is a great rifle for open sights.) The only problem I have had with the Marlin is the loading gate screw will back out. A little loctite fixed mine and it is a great shooter.
If you want a lever gun with more "umpf", you can get the 336 in .444 Marlin. I don't know the ballistics, but it will literally knock a whitetail on its behind.
If you plan to have the ability to shoot more that 100 yds, I would go with the .30-06. The action would be your personal choice.
Hope my 2 cents helps. Good to write to you again.