Unfortunately, the files will be like other converters also equal to a smaller format compresses (MTS 1920 x 1080 gives MP4 1280 x 720), so quality loss before video cut to about 1:10. Therefore, sharpness is lost and in the dark Bildtteilen (gray sky, etc.) comes z. T. concluded pixelization with large box, which I at least do not want to see.
If you use multiple cameras, possibly even GoPro etc., arises when Cutting a significant difference to the unconverted files, clear vs. "Slightly spongy" and z. T. pixelated.
Quality loss of synchronization are not noticed.
Display, movie preview and so on - all nicely done. Insert a few additional effects, such as watermarks or title, are also available.
Therefore: chance away, too bad! I recommend to try the trial version before buying and to consider whether you want to live with it. Would have liked to 5 * given for quality reasons.
PS: I do not buy more cameras that output MTS, unnecessarily complicated for Mac users.