The first bike I tried out was the Cafe from Vintage Electric Bikes over at Bike Attack Electric, 2904 Main Street. They’ve got a great selection and good place to ride.
Second place I went to was Velo Pasadena, 2562 E. Colorado. Best guy to talk to there about ebikes is Raul. I tried a Stromer ST1 and a Trek Super Commuter. They’re an authorized dealer for Stromer.
I purchased a Rip Current S from Juiced without ever trying it, but I had done a years research and knew I wanted a hub drive with torque and cadence sensors and just knew how it would ride without even trying it. They’re in San Diego so not too far anyways. Good luck with your search.