The 1300 was the most common one though. The 2400 and 2000 were pretty expensive and hard to acquire, not something the Alliance could get en masse. Although I really can't think of any other 'shuttle' type ships that the rebels could use, apart from stolen Imperial shuttles.
Another idea for the Empire - stormtrooper transports. They were in the X-Wing games: http://starwars.wikia.com/wiki/Stormtrooper_transport
Edit: oo oo in that article, it says "Although designed for the Galactic Empire, many DX-9 were also often used by other factions, most notably the Rebel Alliance" - idea? Imperials could use their shuttles and the rebels could use these DX-9s.
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"Daddy, what happens when you die?"
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