Never had one, but I've installed a few for customers. Looks & feels good, PQ prob better than Sly and owners seem happy with them. Humax have been in the game a long time, don't think you can go wrong.
If the foxsat is a freesat box then I would expect it to have all the hd channels that are on the Freesat website. Dont know whether this box is switchable to FTA, it it is then I would expect it to be able to see any FTA HD channels. Think some of the switchable boxes sometimes loose recordings and channel lists when you switch between Freesat and FTA channels.
Thanks for your answers guys . Yes has all the HD channels that Freesat has . HD quality is very good SD not so great but acceptable . no 5 HD ,,think thats only with Sky strangely enough