Thanks Guys for the sound and sensible advice.
Its a good point that if I was to use the tv to display the clips then I would enjoy a better quality.
If I am being realistic I'd only ever do that once or twice.
Of course if I could see a big leap in quality on the PC monitor for just over a hundred pounds I could be tempted.
But as I said in my initial post the job is being done to a pretty satisfying degree now anyway.
I know what you mean about Youtube clips. I've posted videos on there and the original clips on my pc are of course far far better so I always wonder how much better other peoples original clips are...