**Note MSI has upgraded their Gaming laptop line to Kabylake systems GT73** line.
*** I wouldn't personally upgrade because there's really no noticeable performance positives and Coffeelake CPU's will release in 2018 Q2. Coffeelakes will transfer to the 10NM process. I would personally recommend people right now, looking to upgrade, wait.. until next year THEN upgrade to the new 10NM process.
My Windows laptop has a i7-6700K which is the unlocked. I'm interested in trying out one of the Ryzen chips as they hold up to the higher end (double the price) intel chips. Using one for gaming wouldn't be advisable yet since games have no optimization for them and performance suffers; however, you can get a Ryzen and a good GPU, still spend less money, and have a good gaming experience.
One of my Windows PC's have an i7 4790K and the other has an i5 4590. They're technically both my PC's but my sister uses the i5 PC for her gaming/video editing/screen recording.