I have the Carina Professional bought due to the up to this point and excellent reviews could be found in any other Nähforum something negative about it. Now she came to and I sewed the same lot. I was shocked, because they did not even get out a straight stitch on the back just loops and crooked, the needle thread tension even mm-wise adjusted several times, so that either always the upper thread or the bobbin thread was too loose. I must say that I sew for many years and among other things, Waldorf dolls whose clothes, clothes for my two children and me, Krabbelpuschen leather pp. and certainly am more than a beginners won't. Before that I sewed 13 years with my privilege (actually Janome) that has always been faithful to me, but of course not as modern. The guide repeatedly studied, which is partly not so evident as my previous of privilege. Some of them also contains misprints, ie words are missing. In addition, the machine does not contain a crimper, as indicated (in the guidance is then mentioned later that you can purchase these optional to do so.) Well, among other things was under ERROR: no high-quality sewing thread used. So tried with Ikea yarn (really is a good quality), wound bobbin thread so that the machine and conjured a wonderful seam. Well, the whole has to date already than an hour lasted, that is until I was able to sew a straight seam or zigzag normal. But the next time sewing, and I a high-quality new nor original packaging have used again the same as first .... a horrible seam. I can not just IKEA sewing thread sew yellow, green, red and white colors !? I was really desperate, all write, the machine sews so great ... only I'm suddenly too stupid for ??? Again reviews studied, suddenly three negative reviews of the last three weeks, exactly describe the same problems. Now I was phoned 4 days before the return deadline, on Amazon and decided to return the machine immediately. By the way once again with a very friendly and obliging restitution, I had in fact not even the original box. Thanks Amazon! Because I assumed that it was up to me, and I had myself einfuchsen so. But the machine, by the way, had a change of manufacturer (now Fa. Fischer?) Definitely has a defect, in my opinion, a coarse. Because what you should with a sewing machine, which can not sew the simplest stitches. Some of the threads were so loose that they could so pull by hand. So this is called automatic thread tension. That's why I have got myself a computer sewing machine bought, so I do not ever for a seam had fumbling. The 5-year warranty is also not true, she has just a regular 2-year warranty. Incidentally, it has not worked with a metal coil, nothing worked here. Now I have again bought a privilege, even computers for the same price and have something from satisfied.