What is the best hardware availible for items such as... tuners, floating bridge etc. Or they all pretty much the same? For instance Sperzel vs. Grover things like that. Ive had Grover & Gotoh but i never tried out Sperzel. And are all floating bridges the same? I couldnt find a difference.

ive got gotoh tuners and i love them, and for bridges, the ibanez Edge Pro bridge. it's nicceee. Or just go for the origonal floyd rose, i think thats awesome too.

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Kahler floating trems seem to be pretty respected as well as the original floyd rose. I'll vouch for the Ibanez Edge trems, love em. All the trems pretty much will do the same thing. Differences I know of are Kahler trems don't require as much wood to be routed out to install. Not sure about tuners.

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Just today, I got a new guitar w/ a Kahler trem. I still need to learn how to set it up and stuff.

Sorry i ment fixed bridges

Are all fixed bridges the same?..no.

I also failed to mention these are 7-string parts im interested in.