You looking at away to much magnification in those choosen scopes for what your going to hunt. With a Marlin 30-30 hunting deer your shots are going to be at very very maximium 200 yds depending on your location. If your hunting in bush most likely your shots are going to be averaging 50yds or under. At 2.5 magnification a deer at close range, say 60ft or so your going to have a hard time finding it in the scope in the bush especially if its on the move, because of to much magnification which results in a narrower field of view.
I highly suggest looking at a 1x4 to 1x5 variable. Personally I would take a hard look at Leupold VX-2 1x4. A little more money than what your presently looking at but an excellent quality scope that will last you a life time. Excellant optics in a very well sealed tube with good mechanicals inside. Life time warrenty.
Any scope will work well in nice sunny temperate weather. But when its raining and the temps are back a forth between rain and snow, the relative humidity is high. Your in and out of the truck between runs, and or you bring the gun inside the camp for lunch where its warm then back out in the wet and cold. This is when cheap scopes fail and fail badly when you can't see the deer standing 30 ft in front of you because the scopes all fogged up on the inside. In the above situations you will be dam thankfull you spent the extra money on a good quality scope, as you won't have any issues but some of you hunting companions will. And they will be cursing that dam scope. And you will be sitting there smiling saying " I can see through mine just fine".
