10 vs 12 foot Brillion seeder

I'm thinking very seriously about getting ready to purchase a Brillion seeder and was wondering if there was any advantages/drawbacks to a 12 foot instead of a 10? The biggest thing I see is the transport width for a 10 is 13 foot and the transport width for a 12 is 15 foot......the 13 foot transport width would be easier to maneuver down the road than 15. I was originally thinking about a 10 foot model but there seems to be a much greater selection of 12 foot models for sale is why I was wondering. Thanks, Hayden