It's a great machine that will produce quality, replicable string jobs, albeit at a leisurely pace. So no, you won't win any stringing speed contests, but if you want to string your racquet with a particular string at a certain tension, you can string that racquet with that string at that tension time and time again. And it is that ability to reproduce the same string job time and again, that all stringers, amateurs and professionals alike, aspire to achieve.
From my own personal experience, don't delay in buying it or any stringing machine for that matter, because I procrastinated for years in buying my K'mate, and now my best tennis playing days are behind me (especially if I can't get rid of this damn tennis elbow!). Aussie
Dunlop Aerogel 500 Tour @ 56; Volkl PB7 @ 56