I would say nearly every VU+ suits yur requirements. For years I have has a Solo2 that has given me great service. I've now purchased a Zero4K. Found it to be amazing value for money. 4k is terrific and its quite a powerful box. Amazingky small as well so fits in any where. Wuld like to have been able to put a HD in but that's not possible. Still, an external drive or USB stick can be plugged into the USB port. Only one port though which is a bit limiting.
I will agree on that. VU+ receivers are very smooth on Full-HD and 4k channel resolutions as well!
