I personally do both, with many others. Currently, I am running a mix of SOG, 12/12 from seed, and untrained. Just chopped a ScroG, and am thinking of supercropping for the next round. I basically like to have one big plant, a few medium sized, and as many SOG/12-seed as I can cram.
I like growing in as many different ways as possible. Know any new ways?
P.S.- As sk3tch3 said, I believe a SOG would be best for ya. All depends though, are you gunna have a mum for clones? In my opinion, SOG should be a clone project. ScroG is also less maitenance, but should also be clone only.... not cool having to rip out a male from the rest of the screen.
Need more info about your setup/ideas to really tell ya what's best.