Guessing you're looking av.com by the some of the bundles you've listed, I was initially tempted to suggest the Wharfedale Diamond 9.1 HCP 5.1.2 Speaker Package, Black at £625 rather than the Wharfedale Diamond 9.1 HCP 5.1.4 Speaker Package, Black at £749 - the £125 difference adds 2 more Atmos height speakers which could be added for £140 yourself later and to pair that package with your choice of receiver - such as the X3800 at £1,200 from Richer Sounds as suggested above. You'd be at a total of £1,825 for an X3800 with 5.1.2 or £1,950 for X3800 with 5.1.4.
Then I looked at the X4700 with 5.1.4 AV Bundle you mentioned and noticed it's £1,899, which sits right in the middle.
It does seem a decently priced bundle and there's not much in the way of deals being offered including the X3800 by the look of it.
Does the X3800 feel like it's worth an extra £50 over the X4700 is the question?
the extra £50 for the av yes if it has 6 hdmi that support 120mz as the x4700 only supports one hdmi.. that would mean i would have to choose tv xbox or ps5