I've had this laptop for about 4 days now, and overall it has been great. I returned my first one due to the wifi not working - it only got 1 bar when right next to the router, and no signal at all anywhere else.Performance: 4 starsThe i7-7700HQ processor coupled with the GTX 1050 dedicated GPU makes for an impressive amount of power in a small package. I'm able to run most games on 1440p or 4k with playable performance on high settings. You won't get 4k ultra performance, but you'll want to look at gaming laptops for that. Also, I have issues with severe diagonal screen tearing in some games. Lowering the settings seems to help, but Vsync doesn't help at all. It seems to be a known issue with windows 10.Disk: 5 starsAn SSD is superior to traditional drives in all ways except capacity. They're lightweight, silent, use less power, and are resistant to shock damage. But most importantly, they're incredibly fast. Apps open instantly and the system boots up in seconds.Screen: 3 starsThis is where it gets tricky. The 4K UHD panel is generally great. Good color quality, very bright, and very sharp detail. HOWEVER, mine does have the now-infamous issue where a thin black bar appears in the top-right corner of the screen and slowly drifts down. This is a physical defect in the screen that Lenovo is aware of and says they are working to fix quickly. For now, you can fix it temporarily by storing your laptop in a vertical position with the top of the screen facing down overnight. The bar may reappear later though. Another minor gripe: There is no HDMI output, you have to buy a USB-C to HDMI adapter.Input: 3 starsThe keyboard feels a bit spongy, and the trackpad is decent but sometimes feels like it's not responding as well to tap-clicks as I would like. The trackpad itself also seems to be slightly vertically askew, but so far it doesn't affect functionality. No pen is included - just an empty box where one should be.Sound: 4 starsAs far as laptop speakers go, these are very high quality. They're loud, full-sounding, and not nearly as tinny as many others I've owned. And for all the ports this laptop is missing, it does have a headphone jack.Other thoughts: The fingerprint reader is a nice addition, but I do wish they'd have put more ports on this thing. I can live without ethernet, but an HDMI out, a third USB, and an SD card reader would all have been nice.Conclusion:If you're willing to accept the risk of the black-bar issue, I recommend this laptop. No other model out there has this level of performance without looking like something out of a Transformers cartoon. I'm going to keep mine for now and see if the black bar gets any worse. If it does, hopefully Lenovo's warranty center will have a permanent fix soon. There is a huge ongoing forum thread on it ("Yoga 720 Display Issue").