I bought an iPad Pro 10.5 about a month ago to semi retire my beloved and faithful iPad 2. I got the 256GB gold version and its brilliant, though the home button has started going clicky
Besides that the screen is just brilliant, I think the size increase is great. I think its the screen that won me over. Its the perfect replacement for my iPad 2 as it is fairly future proof. Currently enjoying all the benefits from the last 6 or so generations of iPads (Retina display, thinner/lighter, Touch ID, better camera, lightning, handoff features from iOS 8, airdrop, split screen multitasking, iOS 10 etc).