I'm talking about an RO filter that hooks to the faucet. Not some half-assed Brita filter or some crap like that. Get the same RO as any other. I've never looked into them much but have seen many for sale on the net. Same as one that goes under the sink but you hook into the faucet instead of the plumbing.
That one in your link there Snucks looks like just the ticket. 3gal/hour so you won't have to leave it hooked up all the time to get all the water you need and plenty more. I add some pink himalayan sea salt to the RO I drink to give it some flavour and 84 minerals. I figure I could get by with 5 or 10 gal/day and would set mine up on the wall in the basement where the distiller is now. Got a line going upstairs to the kitchen sink and a 20gal storage tank I can put a float valve on to keep filled up.
Now I got the hots for one!