Dell make good monitors (it's just a shame their desktop computers aren't as good
) but in that price range the specs are all looking kinda similar.
Here's a Samsung with same spec and better response time for over thirty quid less:
http://www.scan.co.uk/Products/22Samsung-LS22CMKKFV-Black-Widescreen-5-ms-1680x1050-1000-1
Unfortunately, only real test is to have a look and compare.
If I were in the market, I've always favoured Samsung but would willingly consider Dell and Hyundai. Philips too, but they're pricey.
Dunno mate, if you like the look of the Dell, go for it, you'll be satisfied I'm sure.