Dave,
What do you want the PC for... if reading music look here, these are all coming down in price...
I wouldn't buy a Ipad for reading music much too small you need A4 size screen
Obviously Tony you are someone who has NOT used an Apple Retina display - let me tell you the clarity on the iPad far, FAR exceeds even the best laptop, obviating the need for a 12" (cumbersome on stage) laptop or tablet. And although a marginally less at 10.4" compared to the 12"
(what's that, maybe 1.6" difference - about .28" less on each side) this is so NOT noticeable with the iPad screen running right to the edges.
I have compared a laptop and Android side by side...and even the best Android is not even close to the Retina display on the iPad 3 (even the iPad 2 is better in my view)....
And with the price of the iPad 3 now so competitive, for me, it's a no-brainer as the yanks like to say