I'm looking at installing a 350L unit in my Bipper van as I'm doing more and more WFP work every day and running out of my barrelled water. The van I have now is an 09 plate and I've owned it since day one but I'm probably going to swap it out next year so I want perhaps an install that can easily be swapped to another vehicle. I would prefer an RO+DI system as my PPM is 325 and I burn resin using my Unger Hydroflo to prep my pure water, however I've only got a £1400ish budget to install the tank. I have a pole etc already so I would need a system + hose reel. I've looked at the Facelift compact from WCW which is about £1200 but that's DI only. The way around this I guess is to run my water through my hydroflo then out to the van and allow the vessel to do some of the purification before it goes to the tank. A pain in the backside and doubling up on resin use but the hydroflo would run to a higher TDS because it wouldn't be the final product. Any ideas or companies you've used to do yours? 500 is too big and heavy for my current payload and I am happy to refill twice a week. Thanks.