Its my lovely fella's birthday in a little over a month and I would like to replace one of his guitars. It's the one I see him use the most, which he uses in band practices etc. It looks quite old and a little damaged. As far as I know it's just an standard Acoustic (his other two guitars being way more expensive and being able to plug an amp in). Anyway im clueless as to which, brand etc are good. All his guitars are 6 string and I've seen 12 string ones available? And silent guitars, what are they about? Help!!!