Some more info to take in, thanks guys will have a look at these. I think it will be down to what you are used to like anything. As a sole trader i think its best to keep things simple if you can. I think we can over complicate things if we arent careful, its a bit like the wfp debate - which pole, which backpack, etc etc. all again down to what people get used to and are comfortable with.
Ultimately, the manufacturers of these products seem to be doing very well out of it.....
Cheers
Steve