florescent

Hello everyone, Great forum with a lot of insightful information. If I were to create a single replacement for Florescent tube, what would be most popular sizes in order for both commercial and household use? 12 inch // 24 inch // 36 inch // 48 inch. Lumens per/watt? 1650? 2000? 2300...

As I understand florescent electronic ballasts should live about 10 or more years. Other those few that could go bad, why there are so many going bad after 5 or six years of installation? They are mainly on a 277V. would installing a surge protector help prolong their life time?