well man, you live in LA and you ride 6-10 days a year.... you should just ride the board you have now - a very good one - a lot more... if you only get 10 days a year in the SL will be fine for 8-10 years.
switching to a different board is not going to make you any better. riding more will. save the $ you would spend on the board and use it for plane/lift tix.
so, not to take the wind outta yer sails, but don't buy another board. ride the one you got.