Well, let's see.
Star Trek Enterprise Season 1 Disc 1
Broken Bow: there is no question in my mind, this is the best Star Trek pilot ever. The picture is the worst from the 3 episodes from Disc 1, although it has some excellent CGI elements on it.
Fight or Flight: Live action scenes are better quality wise than BB, but the CGI of the alien ships is worse.
Strange new world: By far the best quality on the first disc, with some minor annoying things when CGI is present.
I love the "In conversation" feature, Robert Lay and Robert Mayer Burnett really nailed this one, Rick and Brannon have a wonderful conversation, highly recommended for every Star Trek fan. I also liked the "O Captain! My Captain! A Profile of Scott Bakula" feature that is fun and "Creating Enterprise" is good too. The two presentations are OK, the Syndication one is better
Overall not bad at all, nowhere near TNG Remastered quality, it has the quality of FIrefly on blu-ray, maybe slightly better, better than TFF on blu-ray to take an example from the Star Trek Universe.
I will give it a 3.5/5 stars for Disc 1.