Back in the early 2000's I came up on of those Bulletproof Kevlar skateboards for free. It actually wasn't bad. Granted it sounded a little different when you popped. But it was nice having a board that didn't break that my friends and I could always have around in case one of us broke our deck, and didn't have cash for a new one right away. It was also fun because we could take the trucks off and fuck around with it in the snow during the winter, and we wouldn't have to worry about it getting waterlogged. It took about 5 years for it to get a really gnarly razor tail, and it finally died when some kid decided to use those Randoms pound in hardware.
Another friend back in high school got one of those metal Aircraft decks. That thing was awful. It was aluminum, or some shit. It was real bulky but, only a tad heavier than a normal deck. It slid shitty, and sounded awful when did an ollie. Pop was just weird too. The funnest part of that board was watching my friend spending about a half hour focusing the thing.