I have decided (after going around in many a circle) on the Viewsonic VP930.
Some researching kept pointing me towards the Dell 1905FP, 8ms version and not the 20ms version, with a PMVA? type panel, that offers better viewing angles and blacks.
The new 1907FP uses a TN panel that offers more restricted viewing angles, poorer blackes, noisy movie playback and other things I cannot remember
I searched high and low in the Uk for 1905FP 8ms sales, but the few that were returned were all second hand and I'm a bit cautious. However I have found out the Viewsonic VP930 uses the same panel as the 1905FP did, as well as having the tilt/height/swivel functionality of the Dell, which I also wanted. I'm just not so fond of the colour
It ranges in price from £270 up to £350 (£350 being on dabs!) I'm tempted to buy one of those moving wall mounts so I can swing it around the place and pretend to be in Star Trek