tuning the strings against each other is easy enough but if you play with other musicians [ piano , brass , woodwind ] it is handy if you get an accurate reference point
having a guitar that is perfectly in tune with no one else makes you look bad [ dont ask me how i know this ]
Its easy to get a reference point if you have perfect pitch , besides, its just as easy to ask one of the other muso's for an "E" and tune the whole guitar, takes less than a minute....
![Grin ;D](http://forums.sohc4.net/Smileys/default/grin.gif)
I have a good friend that has played and bass with me for years, when i lived up north {about 600K's away} Danny would ring me and i'd tune his guitar over the phone, yes he thought {and probably still does}that i was a smart arse.......
![Grin ;D](http://forums.sohc4.net/Smileys/default/grin.gif)
Actually what makes that easy for me is playing with CD's and records all my life, records were worse because most record players were slightly out of tempo, making it a must to tune up every time you changed a record or played somewhere else, well almost anyway, CD's are much better but a lot of bands i listen to use different tunings or tune the whole guitar down a half or full step, anyway i solved the constant tuning problem by buying a pile of guitars and tuning them all differently...
![Grin ;D](http://forums.sohc4.net/Smileys/default/grin.gif)
What guitars do you have Simon..?