I looked into this before cos I liked the little Martin (which will be the 000-18) he played on The Martin and Me tour – I tried out some of the 000 Martins. The 000-16 is lovely, tiny, light but with a great tone. The Gibson is super-rare.
Acoustics
1950s Martin 000-18, Gibson CF-100 and Martin D-28 F acoustics with Sunrise pickups