I got the Ui24r for our theatre for several reasons:
1). I won’t buy Behringer.
2). At the time we could not afford the jump to Allen & Heath for our secondary mixer.
3). The HTML 5 browser interface is a good feature - no proprietary apps to wrestle with and other people can make their own add ons. I use the Ui MIDI app now and then for fader control.
4). The processing sounds pretty good to my ear: EQ, comp, verb, etc.
5). Enough pro features but also easy enough for any of our volunteers to use. A nice median on that spectrum.
It's not our primary indoor mixer: we have an SQ6 for that, which I love. But for smaller, and off-site gigs in other spaces, it meets the needs.
How’s that?