I rented an authentic Glidecam it a few months ago for a shoot. I was able to make the comparison with Tarion and I was amazed by the quality of manufacture and finishing of the latter, for a price almost 6 lower foix. Settings are long and difficult as the Glidecam models, neither more nor less, is the concept that wants that. But given my 1st tests, the Tarion has done its job and with a little practice (as with the models of competing brands), you will realize superb tracking shots. The Tarion 0.4m is a great investment.