The Penguin Gentoo Sprayer PR600 is a very good and well built sprayer. We have used them and the larger models for years. In fact the the one I'm replacing with we have used for over 12 years! I think other then a pump and a battery, everything else continues to run. This sprayer will last for many years if your just using it for pre-spray. However, if you plan to use it for spraying down any kind of solvent or fluoguard protector the hose that comes with the sprayer will not last more then a week or so. What happens is the hose becomes extremely hard and inflexible due to the solvent. We found the curly hose that came with the larger 5 gallon sprayer kept it's elasticity and never hardened. I believe it was made of polypropylene and therefore it is not affected. It took some doing but we modified ours to use the polypropylene hose and never had a problem. We also modified the lance using a brake line. It's lighter and much longer. The reason we do this is to keep the product closer to the carpet and far away from the applier's shoes and uniform. The sprayer is worth the money and I highly recommend it.