I have just bought a 4040 inch system and now looking for a booster pump to set it up with.i have heard alot of people using this pump below www.machinemart.co.uk/shop/product/details/cbm240e-1in-multi-stage-230v-booster-pumis that a good enuf pump to boost the water for 4040 RO ? theres also another one without the electronic control unit www.machinemart.co.uk/shop/product/details/cbm240-1in-multi-stage-water-pumpwhich one would you say was best to get?