Hey Rubberfist, I was having a similar dilemma a few months back on which to buy. I had never bought a nib before and with current prices figured this would be my first and last for quite some time. Where I live there are not many places to play new pins out in the wild, basically only one thanks to the great guys in the local league for setting up a spot at a pub. Back to your question and after looking at your collection we have a lot of the same pins and may have similar tastes. I eventually went with the Hobbit and Im so happy I did 6 weeks later the honeymoon is still on. I was really excited about GB but after playing it many times I ended up just not a big fan of the rules and some of the shots. Metallica is a lot of fun and for a pro might be the best bang for your buck. I personally don't think the extra for a premium is worth it. I however eventually tired of MET except for the awesome music. Ultimately everyone will have a different opinion I can only say TH IMO is just in a superior class with there pins at this time. Good luck trying to make the decision in the end I'm sure u will be happy with whatever u decide.