The good thing is a M1A1 Abrams is suck a BIG tank almost anything you put next to it is going to look small.
That is a good point I thought about . . . A scale Abrams would be too large for me. These look good: 1:56 reduces them a bit so they don't overwhelm everything around them. I don't have them on my layout in 1:56 or any scale only because they are too modern. Nice looking tanks. I have a bunch of MTH Shermans and some 1:48 Corgi Pattons on flatcars - they are almost too big, but . . .