Im from Staffordshire originally so I might be a bit bias. Currently live near Reading.
I like foresty trails like Swinely, Chase, FOD.
I'd say the Chase is much much better than FOD (at least way marked route not Downhills).
Its also much better than Swinley being both bigger +longer, and feels much more like a "real" MTB trail.
Personally I'd rate it more fun than CwmCarn (except for climb which is good at CwmCarn).
I'd say u should go and see what its like. The best thing about it is the way marked trails are long + continuous. I dunno if the black monkey is open but that section in terms of difficulty + enjoyability blows the XC trails at Swinley+FOD+Cwmcarn away (not including the DH trails.
the Downhill trails arent too far from the Monkey and as an XC rider I really like the Red (or I did like it seems to be quite changeable). In the dry at least its hugely fun with out being difficult for an XC rider plenty of drops.