Every manufactures has its own charm in e.m., they where made in a time that competition was really competition.
Most of the parts used in one brand wouldn't really fit in another, they all had there own style.
Just look at the shooters, you can tell which brand it is just by looking at the shooter housing!
Nowadays?....nah, not my cup of tea.
So, I have not one brand I like, I like them all, one game better than another, but that has to do with personal taste.