After looking into this, I've come round to thinking that it's better to buy a good acoustic guitar, and have it fitted with a good pickup (what 'good' is in each case depends on your view).

I don't think any electro-acoustic is as good. I do have one, which it suits my purpose to use for certain band gigs, but otherwise I use an acoustic, which I can use unplugged, plugged in or mic'ed (or of course plugged and mic'ed, although I've never done this in practice so far).

Of course you may need some sort of switch and/or volume control between your guitar and the desk, as there are no on-board controls. I could have had them fitted but decided against it, as I preferred to keep mods to the guitar to a minimum.