Three are better than two.

I have a Lowden O-25, and two Martins - an OM-28 Marquis and an HD-28V - as well as a Fylde mandolin. All bases more than adequately covered.

I buy guitars to play, not as museum-pieces, so I take any or all of them to any session, singaround or gig that I get involved in. I used to lend them until the (then brand-new) OM was lent to someone at a gig, and it came back to me with gouges on the side where it had rested on the zips in the leg of his cargo-pants.

NEVER AGAIN, SO DON'T ASK!