Vogel's guidebook is encyclopedic and weighs about as much as one. I borrowed a copy of the old edition last time I tripped out there 3 years ago. It's got good pics and route descriptions. I think there's a new version out.
Bartlett's guidebooks are OK if you're going to be in one specific area. However, their topos aren't so good.
I would recommend getting a "Select" guidebook if you can find one. There are too many climbs out there spread over to much space to do in one trip. It would help you narrow down your search.
WARNING: There are some serious discrepancies between ratings in the two guidebooks. I would say that Vogel tends to sandbag climbs near the lower end (5.10 and under); whereas, Bartlett's ratings tend to be truer to the grade at the lower end.
Climbs that stick in my mind that I HIGHLY RECOMMEND at the lower end of the scale: Mental Physics 5.6/7, North Overhang (5.9) & Overhang Bypass (5.7; Intersection Rock), Elusive Butterfly (5.7), White Lightening (5.7; Hemingway Buttress), Sail Away (5.
; Fote Hog (5.6/7). There are tons more. Make sure your crack skills are honed.