My first Gears game was 3 and I have been playing every game after release till then and went back for the ones I missed.
I like to have simple not too flashy skins for a touch of realism as if a gear put a little sign on his gun for nothing too much but thats just me
Favorite MP (Cog) character Golden gear for life
Favorite MP (Locust) character Kantus/Cyclops.

Fun Fact-I started with 3 because my mom had bought the special edition console
I still remember coming home from school and bonding with my mother with some gears campaign and multiplayer oh how I wish we could still do that but her motion sickness gets to her easily now

Age:Its a riddle I mean you can try to guess I started on GOW 3 on release and had to be of age to actually understand it so that is a good base to try.