I have the original SkyTrak, and was happy with it. Then Golftek took over, and now only the “Lite” version of the software is available without premium subscription or new hardware. The Lite version is much slower responding to shots (often 10 seconds), or freezes/doesn’t display shots despite the hardware unit indicating it is ready after the previous shot. Requires re-start of software. No way I’d upgrade after this experience.