Sorry I'm late to the post Keystone.
I have and have shot Sig mpx, he mp5 high point and the scorpion all good at different price points.
When it comes to cost and availability of parts to maintain or trick out nothing beats the ar 9, it is the Chevy 350 off pcc,s.
Top end jp, ready to win waiting on you! 2100 up.
Good gun that can compete and be slowly upgraded to jp. Palmetto state armory. 550 to 625.
If I know you are coming all bring all mine and let you try them!
Be warned its ADDICTIVE FUN!.