Hot Wheels Monster Jam Trucks

My son is almost 3 and me and him catch the Monster Jam show almost every day.
Every time I go out hunting for new G.I. Joe figures, I check to see what Hot Wheels Monster Jam Trucks they have got in hoping to see one that he doesn't have yet. I'm not sure if I collect them for him or me, but he opens them all and he definitely plays with them more than I do?
Does anybody else here pick them up?

M0NEY-B

Wow, not a whole lot going on in the Hotwheel's forum huh? lol

I'll pick up a Grave Digger if I see them since I've loved that truck since I was a little one. I picked up the "Spectraflames" Teenage Mutant Ninja Turtle truck a couple of weeks ago, too.

Nightwind