I'd hate to try to get one of those through security at an airport.

An RODI system using a very low end sediment filter, a low end GAC prefilter rather than a carbon block, an unknown brand 100 gpd RO membrane, and a non-refillable inline DI cartridge. All mounted in a box. Not something I could recommend to folks.
Russ
One more thought on the "water briefcase" thingy. Maybe the developers should consider adapting it into something that can be purchased by humanitarian groups and sent to locations in developing nations, where the available drinking water is sketchy. Even donate a few to build goodwill.
Even so, the fact that the filter elements are non-replaceable tends to hobble the whole idea, IMO. Fit it with high-quality, standard, replaceable filters and I think it could take off. The market is already glutted with water filtration systems that rely on non-replaceable or proprietary components. Nobody likes to plunk down a couple c-notes, only to have to replace the whole thing in a year or two.
An RODI system using a very low end sediment filter, a low end GAC prefilter rather than a carbon block, an unknown brand 100 gpd RO membrane, and a non-refillable inline DI cartridge. All mounted in a box. Not something I could recommend to folks.
Russ
Wow lot of negative feedback, most of it not accurate.
I'll admit I was probably a little harsh.
But in all fairness it appears you did just parachute into this forum, ostensibly to shill your Kickstarter project. Did you honestly expect to wow us all with that? Keeping in mind that there are a few water experts who frequently haunt these forums, including Martin and Russ, who have already weighed in on the subject.
If you want to impress us with your acumen, you might try building some rapport first.
Nope. Sorry.
Nope. Sorry.
Back to the subject of RO systems...I have to say I am happy with the Buckeye system I recently bought. Rock-solid construction, uses standard filters, wastes a LOT less water than some of the other systems I've seen, and the output rate is exactly where it should be. I have a 75GPD unit, and with my line pressure and cold tap water this time of the year, it produces about 60GPD, which is spot on. And the price was right. I emailed a few questions that Russ responded to the next day. Good customer service.
That's okay, was never a part of this forum, just googled around and joined when I saw a topic I liked. I'll see if some other threads are a bit more friendly.
Don't want the impression this is mine either. I am just a prototype tester for them. I actually feel bad bc now they got bad rep going bc I might not be explaining it correctly.
Regardless, it worked for me, saw the Kickstarter figured it might be appreciated since $200 for a RO ain't bad. Y'all seem to have strong opinions so I'll leave you be.
Hydronix Water is a manufacturer.
http://www.hydronixwater.com/dl/HDN_Catalog_2015.pdf
The criteria for 'best' is flawed. The waste ratio is end-user adjustable, and is highly dependent on the feed water quality and hardness. If you're not flushing with an adequate flow of water and your feed is hard, you'll foul the RO membrane.
And with a wave of my hand and a click of the mouse, the thread's yearlong slumber ends and it RISES ONCE AGAIN! BWAHAHAH!
To those who posted in this thread a while ago: still going good? How long (as in, how many gallons of RO water produced) do your filter sets last (I dig there are differences related to chemistry).
ALSO: Is anyone else bothered by the amount of water that is "wasted" to make a gallon of RO? I wasn't aware that was part of the process until just now. I like the idea of having RO "at the tap" and not having to recycle all the empty gallon jugs of distilled water I currently use, but don't relish the idea of flushing 4 gallons down the drain for each gallon of water I actually use. But...then again... what's the environmental impact of generating the heat required to boil the gallon of water I do use...
At the moment, I'm not sure it's worth the money: Figure a couple hundred bucks for the system, and even with a two year ROI I'd be looking at needing to brew 100 gallons/yr to break even ($1/gal for distilled h20 at the supermarket). That's before the cost of extra filters, although many kits include the first replacement set. I know I could do it even cheaper if I used the RO "vending" machines, but I have issues with those.