There's a theory out there that a picture of a cool car on the cover of an otherwise uninteresting LP will increase its saleability. Maybe that phenomena crosses over to record label design, but I doubt it.
The Whittier records design pretty much rules this set, but I've always had a soft spot for the Roadshow label. I picked up quite a few 45's back in the late 80's simply based on their label design and I remember buying a BT Express record with this design. That van drawing just made the record feel like that much more of a party.
For some reason the blue Beach Blvd. label always struck me as particularly evocative. There's nothing to the design, but staring at the label while the Simpletones are blaring just transports you to the OC circa '80.