I own a 14 and an 18. The difference in the 2 bikes is enormous. I love the 18, tons of power. By FAR more than the 18 KTM and Honda (only other 18s I've rode). This year's bike actually WANTS to turn. On tip in, instead of wanting to stand up, like previous years, it actually WANTS to lay over and carve. This however makes it a little less stable at speed, not bad but noticeable. If you are use to Yamaha stability, you will know what I mean. The shrouds do not feel any wider than any other bike except the KTM is a little skinnier. Didn't think I really wanted the E start but I can't really notice the weight, ( feels lighter than the 14) so I've changed my mind on that.
The 3 biggest things for me was the power and tip in on turning. By FAR more power than anything else and turns better than any YZ youve rode before and the suspension is perfect with just clicker adjustment
Everything else is good to great. Does nothing bad but is not the best either. The mobile app is fun but I ended up liking the stock setting but could be used for slick tracks or other conditions like that.
I personally love it and between the 3 I've rode, by far better than the Honda or KTM