I think I read that there are something like 36 mower manufacturers building zero turn mowers this model year. thats a lot of competition.
I currently have 3, the first one I got and still have is the yazoo YR-60, one of the original zero turn mowers, and a pair of grasshoppers.
I really like the grasshoppers, they are both 2007 models bought used. they are fantastic mowers but at the current new price of about $14,000 out the door with tax I could never afford a new one. id much rather have a scag, grasshopper, xmark, used commercial mower than any of the ones new ones sold in big box stores.