Advice on new box please

[drphibes]

Hi all

At the moment I am using a Mutant 2400hd (four tuners) that I bought from wos a couple of years ago. This is hooked up to my sky dish and quad lnb. I might be moving the box onto a friend so am possibly in need of a suitable replacement.
I like the look of a 4k capable box with pvr facilities and I notice that wos sell Gigablue and vu+ models that appear to have good features.
I notice one of the selling points is the fbc tuners that appear to be a good upgrade over the regular style tuners in the Mutant box I have ?
If for instance I opted for the Gigablue UHD Quad receiver would this work ok with my box standard Sky dish/lnb/cable or would anything need upgrading at all ?
I get a little bit confused when some websites say this box can record or view upto 32 programmes at one time !!!

Any advice on the Gigablue box above or maybe the vu+ receivers would be great.

Thanks