I definitely prefer getting the disc, why go digital and still pay $60 for a game? If there was a discount I might, but there's absolutely no reason to go digital, all the cons outweigh the pros. My PS3 has a maximum of 111GB hard drive space which is a lot unless I was downloading digital games, that would take no time to fill up. I love having the cases and manuals with my games, I very rarely (if ever) purchase a game without them. I will look elsewhere if the case/manual aren't included. There are so many titles that aren't available on PSN, and it takes literally forever to download a game, even on a fast connection. In 20 years who says Sony will still be around? I'm paranoid that if PSN goes down, the games playability goes down the shitter too.
The only way I like to keep a digital collection is something like the DS + a 32GB flashcart. I sold all my DS games and have the ROMs of them on the flashcart, that's pretty convenient.