Whether it be tracked vehicles or wheeled, just something with a closed turret please. I suggest maybe BMP-2's or maybe even low tier tanks (T34's, T55's) for an expensive price. Or even some wheeled vehicles such as Stryker's (preferably Stryker MGS) or BTR-60's, BRDM-2's with a turret. And for the aviation front, I'd suggest AH-64's, AH-1's for helicopters. As for planes, I never was much into them, maybe some low tier jets. Just something fast.