Apex Park was a fast favorite of mine... Enchanted Forest is fast and well built and Magic Mountain is your techy option. The trail layout is very "out and backy" making both Enchanted Forest and Magic Mountain easily "lap-able" if you want to hit either of these trails more than once.

  / strava  

Trails in the video:
Argos
Enchanted Forest
Rocker
Apex
Magic Mountain