IPTV - quality of picture

[heyho]

I've had a Vu+ Uno for a while now and was thinking of retiring it to the bedroom. I am considering a replacement box and was looking at the possibility of an IPTV set. I know that the card sharing route (I am not endorsing this by the way) only allows channels such as Sky sports in SD. My question is, some of the IPTV subscription services advertise channels such as Sky Sports as HD. Is this true and what is peoples experience of the quality of IPTV with HD channels.

I find the HD channels I have on my Vu box (BBC, ITV etc) are fine even though the Vu 'only' outputs at 720p. My limited experience of IPTV through Kodi (the Beast) that is installed on my Android based Sony TV is that the picture quality is disappointing in general. A little juddery, blacks leech, grainy etc despite being advertised as 1080p.