Shack posted:Looking for an MTH 3.0 Pennsy 2-10-4 J1 or a 4-8-2 M1b which is the better puller?
The 2-10-4 has a slightly higher drawbar rating so it would pull more all things being equal. That being said, unless you are pulling 50+ car consists the difference is irrelevant on your model railroad. I would go with whichever engine you prefer. If you can't make up your mind, get both and double-head them!
-Greg