Depends on what your after mate, is it for Percy or are you just after a decent producer for a pay day?
If its for Percy then pick something you like just try to stay away from company's like greenhouse, barneys farm, th seeds etc that come with loads of hermies.
If its for production for a payday I'd go with serious seeds White Russian, nearly bomb proof a decent smoke that's strong and yields big with a pleasant smell that's pretty low dour compared to many strains. You will prob get loads of answers mate depending on what your after but whatever it is make sure you do plenty of homework on it because company's that were good just a few years back have gone down the shitter now like th seeds, half of my tent is full of th seeds strains and half of that side of the tent hermied between wks 3 and 5 of flower whilst my other side all serious seeds ak47 have grown beautifly alongside them in very good conditions, which has cost me a lot of money due to pulling the trigger on them before doing my homework, I grew the same strains years ago from the same breeder and they were great, several years later and they're the worst plants I've had the pleasure of growing.