Demoing speakers in LA area?

I have been very impressed with the service at Upscale Audio in Upland. Kevin Deal has some great gear, and is very knowledgeable.
Ambrosia in Bel Air is also very good.

Ambrosia is no longer in Bel Air - They were sold to a home theater group and are now in West Hollywood. I believe that they still carry a good selection of equipment, though. In your area, Upscale is very good as is Brooks Berdan in Monrovia. LA Audio downtown aslo has an interesting selection.

You could also try Optimal Enchantment on Santa Monica Blvd. in San Monica. The owner, Randy Cooley, has been there for over 30 years and is great. It is best to call for an appointment. (310) 393-4434.

You might want to check out Tonian Labs in Glendale. They make some very good speakers using a Fostex full range driver and their own super tweeter. When they demo'd at the Arcadia VTV show, everyone asked if the sub was turned on. It wasn't. It drew in people form out in the halls. I sat there, dumbfounded at how good the sound was for the price. I had just bought some speakers for $200 less than what the asking price was and kicked myself in the butt all the way home. They go for about $1500 and seem worth every cent. That should leave you with more than enough for the rest.