Sadly, most of the best routes are also the most popular.  The ones that get a lot of traffic have way less loose rock and are often justifiably popular.  Are you looking for cracks or sport climbs?  Most people start at Sunshine wall because it has lots of good routes and gets sun.  Any of the 3 and 4 star routes in the book are pretty good IMO.   
  
A few Suggestions 
  
5.6 - Stokin the Chicken (hard 5.6 IMO) 
5.7 - Seven Virgins and a Mule 
5.8 - Crossing the threshold, Vantage Point 
5.9 - Don Coyote, Tangled Up in Blue 
  
There are a bunch more too.  PS, wear a helmet!