Which snowmobile is better?

Hey everyone! I am looking to purchase a snowmobile here in the near future and I found a couple on facebook marketplace that look to be pretty decent. The first is a 1999 Arctic Cat ZL500 with 4,039 miles. EFI and studded track. He is asking $800 for it. The next is a 1998 Polaris Indy special 600cc Triple XLT. It has a pull start, and there is no reverse. 2,700 miles. Ad says it was very well taken care of, runs great, is very fast, and ready for the trails! Seller is asking $900 OBO