Just 2 cents I found lying around...
If you are going to ride dual sport, at the track, or stay within 10 miles of the truck at all times... then I think there is nothing but an advantage to having EFI. It makes excellent A/F mixtures at all RPMS, increased power, and added fuel economy.
EFI will never be a good idea for REAL off-roading. More electronics means more items that can fail due to seemingly minor issues. The more items that can fail make the chances of being stuck in the elements, miles and miles and miles from the trucks, more and more likely. Whether the technology has come along way or not, there are ZERO tow trucks in the places I ride. And very few folks willing/able to tow a person 20-30 miles out of that scenario. I wouldn't put that responsibility on the people I ride with.
2 for 2. Both EFI bikes I've been on REAL rides with, have been towed back to camp. Whether the fix was minor or major. They (and whichever poor soul had to tow them) were done for the day.
It's like taking a bomb along with you that "probably won't explode." I agree, it probably won't... but why are you bringing it? -BIG DAN
Again... just 2 cents from miles and miles into the vast mojave..