Sounds good. I've had the one I put the link to for about 6 months and its been good, cost about £197 at the time.
During the summer it produces 1 litre of pure every 60 seconds but is a bit slower at the moment due to reduced temperatures.
Mine was producing 12 ppm from 280ppm in when I first got it, but after bedding in it now comes out at 7ppm so uses very little resin to bring down to 0ppm.