The con of the HDR-FOX is it doesn't have any catch-up other than iPlayer, and doesn't do IPTV. The con of the YouView boxes is that although they do the catch-up services, they don't do anything else very well (or so dispatches here lead us to believe).
Catch-up is for people who can't plan ahead and book recordings, and so much is repeated these days via the +1, +24, and compilation channels there is a damn good chance that if you missed it first time it will be along again soon anyway. The extra facilities of automated perpetual EPG search and schedule, and remote scheduling, available to HDR-FOX (and HD-FOX) owners who have "gone custom", makes recording anything of interest almost foolproof.