Windows Central published a review on the HP Spectre x360 15
A quote from the article:
The HP Spectre x360 15 is a joy both look at and use, but you'll want to stick near an outlet.HP Spectre x360 15 Review
Sitting at the premium end of HP's lineup, the Spectre x360 15 and its smaller sibling, the Spectre x360 13, have always been eye-catchers. HP has continued to dial that in with several refinements in recent years, notably by switching to its gorgeous, angular "gem-cut" design and shrinking the bezels. The result of all that work is the latest Spectre x360 15, which continues to be one of the best looking convertibles out there.
The Spectre x360 15 also sits in a rather unique position: It's about the only current 15-inch convertible you can get your hands on. That makes for an interesting comparison to other 15-inch premium laptops out there, which may have some advantages, but ultimately lack the flexibility of a rotating 360-degree display. Combined with a vibrant, gorgeous OLED screen, that makes the Spectre x360 15 an easy laptop to recommend — despite disappointing battery life.