Choosing a strain is all personal choice. You should ask yourself what are you looking for. Are you looking for high THC and extreme potency, or maybe some aroma and taste, or some wild extreme effects maybe? Gotta grow some photoperiod, looking at Bodhi seeds and ACE would be a good place to start.
On the other hand, if what you want is just a quick harvest with fluffy buds, that gets you fairly high, any of these would do the trick.