The quality is, as with all Bosch appliances, high standard. The essays are secure and do not fall off after prolonged exposure to heat, as we know it from other devices partially. The ion function provides what they want. The only catch, the "breath power" is a bit too weak for my taste. People with long hair will most likely be allowed to blow dry a little longer.
Conclusion: Although the air flow could be slightly higher, I would buy the device at any time.