I much prefer the Enigma look and interface when it comes to watching TV, so I'm looking to get an Enigma box solely for IPTV.
I have a budget of £400, and only have two requirements from the box; the first is it have beefy internals (to run IPTV and recording etc flawlessly), and the second 4K capability. I know, I know, no IPTV has 4K channels at the moment, but it's just for a future proof thing.
I've been considering a VU+ 4K Ultimo, but some have suggested a ZGemma H7 as it's compatible with Whoosh etc.
Just my humble opinion. Don't go future proofing a rapidly changing technology that is priced at a premium now with no immediate utility.