I purchased a mower today (Gravely) and talked with the dealer about which version to order. The model I wanted had 3 versions, one with a Kawasaki, one with Kohler, and another with Kohler with EFI. The Kawasaki & Kohler/EFI were the same price. She said the only one of the 3 they don't recommend was the Kohler/EFI. I asked why, and she said they are very expensive to repair, the others are easy and not expensive to fix. I guess it makes sense to keep with the tried and true. I didn't ask her if they've had many of the EFI models in to repair, but I presume they have seen some. The Scag dealer I talked to, who tried to sell me an EFI model, said they haven't had any in for repair. So maybe that's the difference, if they had to repair one, they wouldn't try to sell them. That's why I like the Gravely dealer, they are pretty straight up and probably more concerned with me as a customer down the line rather than what they can sell me right now. Not that the Scag dealer (in my area) is bad in any way, but I just feel like the Gravely dealer is more straight forward, personal, and willing to give an opinion, rather than just tell me how great everything they sell is.