Last year, I upgraded my iPad 4 (which had gotten really slow, so I can only imagine what your iPad 3 is like) to the 2017 iPad. I considered the 10.5" iPad Pro and even the older 9.7" iPad Pro, but I couldn't justify the price difference, especially since the Pro models don't have any features that I truly need. I got the 2017 iPad at a Costco sale for $60 off the regular price. I have no regrets. The user experience is just like that of my iPad 4, but much faster. I'm sure I could tell the difference in screen quality if I did an A/B comparison with the Pro, but I don't look at photos or video on my 2017 iPad and think, "Gee, the screen really could be better." It looks great, and it's better than the one on my iPad 4. The stereo speakers are of no importance to me. When I watch movies or listen to music, I use headphones. If I were buying today, I'd get the 2018 iPad. The Pencil intrigues me, but I don't know if I'd use it regularly. I should add that I do my "serious" work (writing, web design, and photography) on a 13" MBP, which I connect to a 4K monitor when I work at my desk. My iPad is my secondary device--one that I use every day.