I've owned a GB Premium for about 8 months now and love it. Yes, a couple things need to be tweaked, but once they were, I find the game very enjoyable. I have it next to a WOZ, and I think both games compliment each other really well. WOZ is slower and has more depth, GB is fast and fun.
GB is obviously a polarizing game on this site, but my two cents on a Premium- it's really fun, especially if paired with another game that plays very different. Keeps it interesting.