Best Life and Health Pre-License program in California?

So I've been searching a lot online, went through the whole directory on the insurance site of CA. Found that the costs vary pretty widely, from about $75 to $300 for the 52hr course! So I've narrowed it down to four under $100 and would like your feedback on each, as well as any additional tips on passing the exam :)

ExamFX - (With my firm's referral, it's $99.95)

PreLicenseTraining.com - $79.99

FirstChoicePreLicensing.com - $74.99

Prelicense.com - $89.95

Thanks a lot! This site has been pretty helpful so far. This is my first post :)