I recommend Riverside for the simple fact that they offer the 90 day program. I hated the 10 month program. Most instructors do too. Go to riverside, stay in the apt, get done in 90 days and go back home. otherwise the Self paced program is truly 10 months. They say it can be done in 4 months or whatever, but honestly its not gonna happen. That location is too busy. They might be sending another instructor, but are the sending another plane???
Riverside has 2 sims, and its a quiet airport. LAX dogs RAL, but I think its great for training. WIth a handle like LAX airport, he probably likes busy airports and seeing all the airliners. I do too. but for training its unnecessary. Dont worry, You'll get a heatlhy dose of busy airspace and radio congestion at RAL. So dont think you'll get jipped (sp?) because you flew out of a slow field. It is towered.