Fitted both of the above
I have fitted both of these devices. First the ecotek device, easy to fit and really has made a difference to jerky starts and fuel consumption. Tricky to set up at first, not difficult at all but can be time consuming, if you buy then also buy additional airfilter that sits on top. My fuel consumption is around 35mpg around town, about 60 miles extra per tank on my 1.8 hlx.
Mini turbo device fitted within last 6 weeks, ordered from Argentina, really helpful and friendly person running site, I was dubious at first but it really makes a differnce at speeds above 60, much smoother throttle response and more urgency. No harm done at least, you have nothing to loose.
Good luck
Cheers