I recently added the Tech 21 Boost R.V.B. and the MXR Bass Auto Q. They are both very well made and good sounding pedals. I like the reverb best when it's just slightly perceptible. The Bass Auto Q is something else. I've tried a lot of pedals over the last two years and have sold or returned many. These two are keepers. My current pedal setup includes: Peterson StroboStomp2 MXR Bass Auto Q EH Nano Baseballs EBS MultiComp MXR M-80 Tech 21 Boost R.V.B. Boss LS-2 Boss RC-2 I also have a Tech 21 XXL Bass on order.