I have a soft spot for Code Veronica, but I'd say 2 was probably best overall. The remake comes close though. I would only give 2 the edge because the two concurrent storylines thing was a pretty cool idea, especially things you did as the first character affecting the second.

I'm also quite fond of Outbreak. I loved the idea, and I think it actually played quite well for the time. It's just a shame about the limited communication and the fact it was released on the PS2. I think it could have done much better a generation later.