1. Cort
- Due to their notorious employee management policy
2. Behringer
- Some of their synthesizers and mixers are really great and bang for the buck but most of their products are ripped-off from other famous stuff and most of them just fails to copy the original.
3. Chapman guitars
- They are messing around with sales contract with guitar store owners. Seems like they tried to be manipulative. And quality of guitars looks bad.