I don't have an 8th gen console, but I am planning on getting a PS4 before the end of this year. I just have to play Madden and MLB: The Show on next-gen lol, they look awesome.
I own an xbox one and PS4. I don't got a Wii-U and don't think i'l be buying one. I like the PS4 more than the Xbox One though, solely for the UI being superior IMO. The XB1's UI is just......clunky. I also don't like the lack of 1080P in most games on the Xbox One. PS4 runs a lot of games at 1080P and 60fps, where as the XB1 tends to run at 990p and only 30fps for the majority of their games. I also own a Vita and 3DS. I wouldn't consider them 8th gen though. They were released during the 7th Gen's lifespan so they are considered 7th gen handhelds, not 8th gen handhelds.