To be honest I get them all mixed up, on the map it's 4 distinct trails but on the ground there's wee trails everywhere, so I usually just end up following my nose. All pretty confusing!
Make or Brake is the easiest but it's pretty jumpy, so you've got to be into that. Cresta or Gold Runs are probably the best place to start... Gold Run goes a bit steep and loose at the bottom after you cross the last push-up track, it's a handful just now... But it's ace further up. Or just follow random trails, they all go down Matador is good too, it's best known for its 2 big drops but it's got a lot of other stuff going on, downside is it's over a bit fast- it goes straight down the hill instead of zipping around.
The nice thing about the dh trails is that you can change them around, they all cross the 2 main fireroads and the bottom pushup so you can easily do, say, upper gold then middle cresta then bottom matador to mix it up.