I have a new 17 390 re with just a couple hours on it and a16 300 re with about 50 hours on it and I can't say anything bad about either one .
The 390 is my first 4 stroke but I had no problem adapting ..
the 300re is the best 2stroke I have owned and I usually get a new one every 2 years
The 390 has a little more handle bar vibration but that is the only problem
Don't ask me to pick between the 2 yet
Good luck on your choice
Not sure your location but I am just north of Cincinnati , contact me if your in the area