Agree with the above.
Ahh, the Marlin Jam. What's is a name? Many have heard of it. A few have even encountered it.
Basically it's a well known but a seldom seen problem that can be seen in rifles that have had many thousands of rounds run through them. It's often incorrectly used to mean any jam or failure to feed in a Marlin, but originally meant "letting in two"--a second round tries to leave the mag tube after one is already on the elevator.
All level actions will give problems if cartridge length varies outside a certain range. This range ideally includes the COL of most 38 Specials and 357 mags, but not all rifles cycle 38 specs reliably.) If you reload, and you care to make it happen, you can have your 38 specs run faithfully. Many cowboy action shooters use the Marlin 1894 in 38 special.
And the Marlin Jam can be fixed. It's not the end of the world or even the end of your rifle. All firearms can have problems.
Bottom line is not to avoid the Marlin 1894 just because you've heard of the Marlin Jam. That's kinda like not buying a Lexus because you heard they can get flat tires.
For the sake of completeness, I'd also include the Puma 92 in 357 mag on that list of prospectives. I had one in 44 mag and that was the smoothest lever action I've ever run. Not sure if Winchester ever made a 357 mag on their model 92 action, but that should be a good one.
Good luck.