I've driven the 240 and 340PS Petrol XE. Very poised and capable cars. I didn't drive the diesels but a friend has the R-Sport 200bhp Diesel
XF and loves it. At higher motorway speeds it's not far off my DTUK GTD, which we put down the 8 speed box gearing, but is a way off at more reasonable speeds (we've compared extensively!)
They aren't as exciting as the MK7 to drive - probably due to everything being a bit too subdued, the XE still handles very well though, and can definitely entertain on an A road.
I would love an XE S (it's been hard to stop thinking about it!), but think it would have to be a manual first and I'm not sure that will ever happen.
Funnily enough, the above friend and I jumped from the 340PS V6 XE S in to my GTD, and we were both just amazed at how fantastically the Golf compared.
We also prefer the Golf dash, the plastics are better and everything is more thought out. Some of the controls are confusing in the XE although the overall cabin feel is good and the seats are better - my whole back felt amazing. I do like the sweeping shapes around the doors and dash (like a boat), and the bonnet bulge in front gives a muscle car feel.
Disclaimer - I'm not trying to sell you my GTD again

Probably going to keep it another 6 months for now. But still - a DTUK GTD with sport and sound, good tyres and DCC, it's awesome.