The K100 or 101 seems to get better reviews than the KTS. I almost pulled the trigger on the new multicolored ones myself.
Despite that, seeing that you are a new member here on the forum, I would advise against purchasing any mechanical mod if you haven't been vaping very long. They lack the safety features of other battery powered mods, so they definitely are not for beginners. The part of mechanical mods that attracts experienced vapors is vaping on lower resistance atomizers. I would advise you to do some research before you pick up your KTS, K100/101, or any other from Fasttech.