In terms for strains I love - MI-5, Auto-Assassin (both Short Stuff), Sweet Caramel and Auto-Blackjack (Sweet Seeds), Smurfberry (Sagmantha), and Santa (Flash Seeds). All of these will, if treated right rival a lot of photoperiod mj and yield more than one oz, sometimes more.
I used to use HPS in a closet set up. Do some research on leds, they really do work well. Advanced, Stealth, GLH, Hydroponics Hut - all of these four are excellent companies. Research before you buy if you go this route. The right ones work very well, but there is a ton of shit leds on the market.