yo pal, what mecha stuff have you seen before, gimme a run down

Not many.
Ive pretty much seen everything in Votoms
Patlabor is my favorite anime
Aldnoah Zero is the least favorite mecha ive seen
-Macross
-Gurren Lagann

Shitty OVAs
-Dallos
-Dragons Heaven
-Robot Carnival
-Starship Troopers

okay, since you like Macross and Gurren Lagann, you might like Mobile G Fighter Gundam, hotblooded action-y battles, and since it takes place in an AU of Gundam, you don't have to watch the early Gundam series to enjoy it, though many people recommend you should. Mazinger as well, since it's very hot-blooded action stuff.

Dai-Guard also seems like something you would like based off your love for Patlabor, since it uses mechas in a realistic, practical setting (i.e A company owns a mecha that adheres to realistic physics, as well as the costs of usage and struggles with said company and the military regarding its usage)

Also The Big O might be your thing, if you like noir mystery.

Thank you! Dai Guard looks hilarious