Anglerdave,
FYI, the tariff's changed on imports which caused the demise of the Johnson 4S. As you are aware of, they are Suzuki motors and I have had no problem with mine. I foresee no warranty issues with the local Johnson folks, though they all say I should have gotten the E-tec. Some dealers made bulk purchases when they were made aware of the restrictions and offering them at a good price now.
If you are still considering the Maycraft, it will push just fine, 4S's are not as great as a 2S out of the hole. If I was tournament fishing or skiing that may be an issue for me.
You can go to Thehulltruth.com and see alot of posts over this very subject, I personnaly liked the 4S selling points better. For instance, one of the the Honda's (130 I believe) is the same motor that they put into the Civic. I don't buy Honda's to drive, but across the board, I think all 4S do have a place on the water. In my case the dealer offered me a Johnson 4S 140 $1500 cheaper than a Yamaha 115 4S. Decision made!