4 ms·Which machine do you have? I’ve been looking for a decent countertop RO system without much success.by thearrow 4y agoWhich machine do you have? I’ve been looking for a decent countertop RO system without much success._yb2s 4y agoAquaTru. I'm pretty happy with it, purchased it used on eBay and put new filters into it.aliqot 4y agoRO Buddy is a good starter if you just want to try for 60ish dollars.