I like to start seeds on 12 hours of light or 13 or 14 hours while increasing the amount of light by 2 minutes everyday, until I reach 16 and a half or so hours of daylight. I have read that the plants respond to increasing daylight hours with rapid vegetative growth.The light cycle times are pretty interesting topic. I guess it all really depends on your application. I'm a indoor - 12/12 from seed kind of grower personally. I can squeeze one more round a year that way by skipping longer veg times.
I have tried the Gas Lantern technique, and the only thing I do not like turning my lights on/off multiple extra times per day seems like that may cause diodes to have shorter life span.
If you want to get them taller, faster, then sure go with above 16 hrs of light. I try to keep my electric bill down.