It goes without saying that the quality and performance of the goods are spot on and totally recommend them. However, my only gripe is having to pay a delivery charge and if you need to return something than having to pay another delivery charge, especially as a lot of other competitors don't do this. The kit is not cheap which is fair enough because of the quality, but i think the delivery / return charge should be absorbed in the displayed price, as people may think overall this is too expensive.