I'm using an ASUS ZenPad 3 8.0. It has a decent screen, USB-C, front speakers, SD card slot and LTE. The 625 CPU and 2GB of RAM kinda limit the performance (3GB version is only available in US), but it's a pretty good upgrade for Nexus 7.
Yeah, seems like only my country got it for some reason. If you're interested, it's the Z581KL-1A042A model, there are a few shops selling it, but I don't know if any ship to other countries.
The Nvidia shield tablet, but thats also discontinued (and won't be replaced as it's too close to the switch they're making the SoC for for Nintendo now).