Des O'Connor looks good on youtube

In my opinion DF is all about selling it to the right customers at the right price - you use it as a USP, a marketing tool, and you have to subscribe to the philosophy of it to carry it off. If you just use it as a system and don't crow about it you might as well just be using a generic system, which in all honesty will be doing the same job there or thereabouts.
If you want to know if it cleans any better than what you've got already, why not ask if there's anyone within sensible distance who would hire/lend you theirs for a reasonable compensation, so you can take it on your next commercial job and put it side by side with your usual bonneting system (I could predict the answer)