Well I think that just about sorts it!!
The lenovo is on offer at preasent so seems to offer good value and better specification than the Dell, previous employers have used Dell machines almoast exclusively with little or no problems as far as I was aware, the few problems I am aware of seemed to be dealt with quickly, however, the Lenovo review I did find that made sense was full of praise for the Lenovo, seemed the only criticism was the thick bezel around the screen!
So I think I'm going to be off to Lenovo and get it ordered!!
Cheers for the advice
Mick