CatdogCat..... I went the extra $$$ for EFI on my 2005 Yamaha 90 and am more then satisfied. Just wanted to get away from carb's. Although we use the boat year round down here so gumming up the carb is not an issue, nevertheless, I've never found it to be an issue with EFI. My bike has EFI and when I was in hospital last year I didn't use it for 4 months, but when I got around to starting it, it started right up.
My friend, a snow bird, has a 90HP Yama with carbs, and every spring when he heads back up north, he does all the necessary, stabil in gas, etc, but every fall when he returns, the motor won't start and in the shop it goes to clear the carb's!
I guess if you use it year round, no problem, but if you store it that opens the door for problems. Years ago they use to have a drain in the carb and if you ran the engine dry and then drained the carb you generally didn't have a problem, but most larger engines no longer have a drain screw in the carb........... Don't suppose this helps, just adds to your uncertainity. :sad