I bought a Humax freeview digi box with the HD channel a year or so ago,the HD channels were spiffing but the normal channels were very poor compared to the ones from the tuners on me TV however it downloaded some updated software and put itself right by itself.
I really fancied the LG full hd HD recorder but it was about 150 quid more than the Humax kit.
I have found LG stuff is very good.