Personally I know I'd love to get my hands on a CNC router for our FRC and FTC teams. Being able to easily do sheet metal parts would be really nice.
Although, I want to throw this idea out there; build your own.
I've been following
this fella on youtube for a couple years, and he's build a fantastic, high-accuracy (for a router), powerful, machine for about $2500, and with the kind of expertise that you have with FIRST teams, it could totally be pulled off. And he even has some good how-to videos if there are things you get stuck on.
And
http://www.cnczone.com/ is a great resource.
You still might find that buying one is better for you, I just wanted to throw it out there.