A big thanks to all for some great tips.
Well firstly let me just say that I succeeded in getting the job done.
So a big thanks to all for some great help and tips.
I actually played around with quite a few applications but eventually it came down to the two that suited me best.
Here's my feedback:-
YouTube Downloader HD
Very simple to understand and to operate. No busy screens and controls just a couple of drop-down menu's, press the download button that's it.
Limited converted output (FLV, AVI & MP4)
Free YouTube Downloader (my personal favourite and the one I'll keep)
An even smaller programme, and even simpler. Just type in the video URL, decide which output format and quality level and hit the download button.
Quality is in 4 levels:- Standard Quality, High Quality, HD(720p) and Full HD(1080p)
Significantly more choice on output formats (including for iPhone & iPad)
Great job done thanks.