I think that depends on your point of view. For me 8.1 worked. Search worked, my browser actually loaded pages, the photos I took actually reliably uploaded, the phone didn't randomly reboot, I could control updates, the people hub worked purposefully, the tiles actually updated reliably, my e-mail arrived properly, I could actually get the images and attachments reliably, and so on and so forth, it takes FOREVER to "just finishing up" when you're just trying to view photos, you can't see what's changed in an app before you update it, the tiles regularly just "disappear" so you have the background but no visible tiles (and the background "scrolls" as far as the tile depth as if they're there), it doesn't always activate the camera from the dedicated button.... I would go on but frankly, you get the point. I've now owned this device for a few months and it is just as poor as the day I stupidly bought it.
On 8.1, it would have been nice if... I could upload in the original quality without Wi-Fi with photos, and if the camera was a bit nippier to get on with it... and that my friend was all that was wrong.
True, it does depend on your point of view and it also depends how you used the phone as many I doubt would have used it intensively for work, personal use and gaming. Then found solutions or workarounds that helped their work flow / make the device work for them. (here's a freebie) For collab work, sharing OneDrive links was much better than sharing attachments :winktongue:.
I'm not going to dredge up the obvious oversights in WP8.1 since yammering on about it will not change anything for 8.1. If you want to know what I'm referring to, send me a PM and i'll happily point you to an example
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The issues you are having on WM10 are the by product of rebooting the O/S once again almost from ground up combined with the new WaaS model.
However once the ground is steady, WM10 is going to be pretty darn good.
I got to play with the 950 yesterday properly (which was set up properly) and it was ridiculously snappy. I couldn't even force the darn thing to micro stutter (I got my cousin's brand new S6 edge to micro stutter by simply opening the email app and scrolling up + down horrendously fast - paper tearing, table scratching scribble fast :evil:. Plus won the bet that it would be the same on any demo unit - we tested 3 - different carrier outlets / phone shops).
Oh you can pin different folders... although it is not obvious (Press the hamburger icon, just tap and hold the account / folder in question then tap pin).
In terms of issues, I didn't find any.
Once my L920 is fully charged, I'm putting the slow ring insider build on it
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In regards to being able to upload original quality over mobile data on wp8.1, I agree it would have been nice to have that option although there are rather obvious draw backs
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