Are there any YouTube to MP3 converters that you would not recommend?

Are there any YouTube to MP3 converters that you would not recommend due to negative experiences?

I have only positive experience using ytmp3 converter. When I need an instant dose of relaxation, this service always helps me out. Thanks to it, I instantly plunge into the atmosphere of my favorite tunes. The best way to get in the right mood!!! I advise you to try it, because it's completely free.