I didn't get into MGS until 4 came out. I didn't play 4 for a considerable time, but I bought the box set of 1-3 that coincided with its release. I had played the first game before, but didn't enjoy it too much. When I bought the box set, though, I really fell in love with the series.

Generally, I'm late to the party because I'm very frugal. I wait for the best deals, even if it takes 2-3 years. I save a lot of money that way.