We have a 2 canister water filter setup from https://www.rvwaterfilterstore.com/ with a 5 micron and 1 micron filter, since we have an undersink filter for drinking water.   They also sell excellent water hoses that will last a lifetime.  The best water pressure gauge/meter is the Watts LFH560, but anything Watts is great.  We also have the Progressive.  

jcordar2 wrote:

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What length hose should I order?

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I would recommend at least two 25-foot lengths, and a third would be nice to have .... just in case.

The Renator will work, but normal prices are more like $50 to $60 in my memory. They are not as heavy duty as Watts. A rule of thumb, if someone is telling you to get something cheaper, price is often more important to them than quality.

Also on water hoses. I agree with Howard about two 25' ones, but also carry a 10' one. In freezing weather I use the 10' if I can, so the least hose is exposed. I also find it better to add 10' to a 25' one when needed. RV water hoses only last a couple years, unless you get the custom made ones from RV Water Filter Store. Friends have bought 35' ones from them and used them for decades, the length the store recommends.