I have one and love it. More than my Techsew. I've had mine for a couple of years. It sews smooth now after doing the modifications mentioned by Silver Forge. One thing Silver didn't mention is the presser foot leaving marks. To help alleviate those take the foot off and take a flat file and give it a few strokes on the bottom to flatten down the ridges. Then play with the presser foot tension screw until you get the desired effect. As for the stitch length you can raise and lower the stitch length screw for the desired length.
Just a warning, most of these machines come rough and need to be filed on some areas, oiled, and then run the machine without needle and thread to get it operating smoothly. After all that practice, practice, practice with it.
I truly feel you won't go wrong for the money. There a quite few more youtube videos out now than when I started with mine that cover pretty much any issue you may come across. And you have this forum.
Take care and stay safe,
Mickey
Arrowhead H Ranch