Dean, had a look at about 4 or 5 sites, and most the reviews pretty much say the same. Lot of money for low performance.
Conclusion
The HP Envy X2 provides Windows 8 touchscreen fun from a sleek and stylish body. Its ability to act as both stand-alone tablet and laptop is undeniably handy.
But it's let down by extremely disappointing performance and a low-resolution screen that are in no way justified by the high price tag. Regardless of what type of Windows 8 machine you're looking for, your money can be better spent elsewhere.
And at £800, I agree, although I must say, I would always go for HP.