Keep in mind Diet will also play a very large roll in size gain. I know alot of very, very large powerlifters who carry around 250+ lbs of lean mass very easily however they are also at 15%+ BF and eat everything in sight. So you need to be consuming enough calories to grow. But I can tell you from 20+ yrs experience that you are not going to stay ripped if that is your goal.
Anyway, it all depends on your goals and to be honest I do not think you can truly evaluate a training method by giving it only 3 to 6 mos. So if you want to get stronger then get into Powerlifting, if you want to get bigger you can incorporate the Power Lifts into a size building program. Perhaps looking into something like Josh Bryants Powerbuilding.
Good Luck
An Old Dawg