Can anybody advice me of the system i am having from pure freedom its the 650ltr 40 ro one and im having it fitted in a couple of weeks i live in the west midlands(hard to soft area ) and would like to know if i require a booster pump for it to help speed up my production of water...do i need one? i have been quoted £500ish from pure for the one with this system which is pricey !they have said niether here nor there, i am confused and the last thing i want to do is get the system fitted and then find out i need one does any body live in this area that can advice me and also tell me am i making a good chioce in buying this set up ,and what i can expect in maintenance costs etc................ ty andy