There's a whole lot been written about string gauges but when I looked into it a while ago there wasn't a single place with all the info right there. Much of it is personal taste so that means everyone has their own preference.
I had my Fender Strat set up by a luthier who really knows his stuff and he gave me a good background to the whole malarkey, liberally filled with his own views of course! The upshot of all that was that he replaced the original 9's with 10's on mine and said if I wanted 9's I'd need to have the frets tidied up. I've since got an ESP which has 10's and a great tone so I think another trip to the luthier is on the cards to get the Strat able to take 9's and have a decent low action without the dreaded fret buzz.
Of course introduce a different make of guitar and different playing styles and there you have the reason why there are so many different opinions.
I think it's really important to have your guitar set-up correctly. Only then will you know if the strange sounds that come out of it are your fault or not :eek:
Do a search of these forums and you'll find loads of previous threads on this subject but that's my humble view for what it's worth.
Good luck!
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