I love my iPP 10.5 but if I'd know then what I know now, I probably wouldn't have bought it (or the iPP 9.7 that was my first iPad). I have the ASK. The footprint of the iPP 10.5 with the ASK is tiny compared to my Surface 3, which has a slightly larger screen. I've had to type on all sorts of oddball keyboards over the years so I find the ASK on both 9.7 and 10.5 to be excellent.
My first disappointment is that iOS 11's Files app is pretty much useless. A third-party SD card reader and app can show me the names of photo and video files on an SD card but iOS can't or won't. Every app seems to "sandbox" its files so you can't get to a video that's in Photos with VLC. You have to (try to) copy videos from one app to another so you have several copies of the same video. That's just plain stupid.
I haven't been able to put iOS 11 on my iPP 10.5 because I discovered that iOS 11 broke the photo import part of the Photos app. It doesn't happen for every SD card, but it happens with enough that I had to leave my iPP 10.5 (bought partly because of the larger screen but mainly because of the promises of iOS 11) on iOS 10.whatever. (I upgraded my iP Mini 4 first, then the iPP 9.7 and both choked repeatedly during the photo import process.) Given that my primary purpose for getting my first iPad was to import, view, and select photos, the iOS 11 mess is a big deal.
The crashing import seems to have been fixed with iOS 11.4, but then I discovered a much more serious issue that affects both iOS 10 and iOS 11, which means I've been losing photos for the nearly two years since I bought my first iPad. When importing JPG and MOV files from SD cards, the import process skips every 101st file. That's over 40 photos on an SD card with 4,000+ photos. Apple tech support has spent over two hours in three phone calls working through this and confirming the problem.
As much as I love the hardware, iOS leaves a lot to be desired for me, who has dealt with mainframe JCL, CP/M, and MS-DOS before Windows. I am particularly aggravated that my iPads don't perform reliably for the main task for which I purchased the first one, which is processing photos. Failing to import photos (very specific photos in a sequence, not random, and not damaged files) is a big, darned deal, and I've spent a fair amount of money on three iPads and accessories, only to discover that they are unreliable for the task they were purchased to perform.
I paid a premium price for these particular products from Apple and I expected to get a premium product, not ones with what I consider almost a fatal flaw.
For portability and usability, battery life, being able to keep up with email and forums at home and at our camp, I love my iPads, but I wouldn't have bought them for those purposes.
