I bought it with things with the class maximum, but as long as I did not scratch the dust stuck for many years with a brush, there was no effect at all. Also, if the air volume is maximized, the noise is also great, so in the future I think that there is only place to use for car wash.
The impression of seeing the actual thing seems to be heavy when taking it from Makita. I fell in love with the strongest class 800W and bought it. After that, we will consider the next year's replacement, depending on how much the operating sound will be increased by repeated use years.