Had my panny set just over 3 years now, its a little worn (thanks to my kids!) and i feel im in need of some new tech. Toying with the idea of a 50st30, but could do with some answers to a couple of questions, will the PQ be better than my pz81? I could push my budget to get the gt30 if this would make a huge difference to PQ, but id rather spend the difference on a bluray and surround. If i do decide to get this set it will probably be from john lewis for £699 with the 2 pairs of goggles,how is peoples experience with them if i end up with a set with the green blob or buzzing problems, will they replace the tv? Thanks in advance Tony.