The iPad Pro is an excellent device. I have the 9.7" one with the Apple Pencil. The wide color screen and it's true tone feature are simply unparalleled [1], and as a drawing tablet it beats pretty much everything out there [2].
There is virtually no lag in anything and everything's buttery smooth. The side-by-side multitasking greatly improves many workflows even if it's still just two apps a time for now. For example I can watch a drawing tutorial on YouTube while practicing in Procreate (which by the way, beats many-times-more-expensive desktop painting apps in some ways.) You can even literally control two apps simultaneously, one with each hand; something that isn't possible with a mouse pointer.
There is a lot more made-for-iPad software than there is for Android tablets, including many AA+ games with all the content that you get in the PC version (just finished Broken Age and Primordia, amazing stuff!) The battery more or less gets me through an entire day on a single charge. I can't really think of anything more that I want in a tablet at the moment, and it'll get even better through software updates.
In fact, what the recent MacBook event has helped me decide, is that most of my portability needs are fulfilled by the iPad Pro — I can do almost everything on it that I need or want to do when I'm away from my desk. So my next Mac will actually be an iMac (need a big screen at home anyway) while the iPad Pro will be replacing my 12" MacBook.
As for the Apple TV 4, it's actually a nice little $150 games console in addition to its media-consumption features, especially if you already purchased games for your iPhone or iPad, since quite a few apps have Apple TV versions that you get for free. The UI is also pretty nice, compared to other boxes.
[1] http://www.displaymate.com/iPad_Pro9_ShootOut_1.htm
[2] https://www.youtube.com/watch?v=VMA25CqKcn8