Should mention that the RO in the base cabinet precludes putting the kitchen waste container under there due to garbage disposal, dual sinks and dual drains, so I needed to put the waste basket at the end of the counter (U-shaped kitchen with peninsula) which happened to be the first thing a person sees entering kitchen. Yuck. And in our current RV due to the way Winnebago designed the cabinet which sits diagonally the trash can had to be very small, also a pain in the rear. So these are two situations I wish to avoid again.
Incidentally after spending a huge amount on new custom cabinet,. (necessitated by layout of kitchen and suboptimal ceiling soffit height of under 7’) I bought an under sink mat on eBay that purports to hold a massive amount of water. And I also bought two water sensors - one to put behind the stuff in the cabinet and a second for under the dishwasher which also sprung a leak.
If the new fiver sink base is the same size I will get another of those mats. There are also no-drain hose countertop RO units that appear to be the size of a large coffee maker ( like a Cuisinart K Cup) which are comparable in price to an under sink model, don’t weigh a lot when empty. That’s a consideration as well. Can try at home and return if not happy. Most Amazon reviews were pretty favorable. There’s only two of use so huge volumes of water are not an issue. My main concern is filtering out fluoride and chlorine.
Here’s a link to the under sink mats.
https://www.ebay.com/itm/33292272412...mis&media=COPY