If you are looking for a bass players multi tool in a single stomp box then this is it. This is the trimmed down version of the B3, but 4 effects at a time instead of the 3 you get with the B3. The amp and speaker sim models here are very nice and you'll find yourself spoilt for options and tones when recording direct. This is a well built little box, but watch out when inserting leads as the paint does chip rather easily, that being said, the intelligent layout and functionality of the control and general construction is of a quality belying it's price. A vast majority of the effects are all very usable, aside from the pitch shifting which is a little disappointing, this is where the Line 6 M5 excels. The compression models here are of the highest quality, especially the DBX160, brilliant for slap tones and calming down some of those peaks. I'm mainly using this pedal live to switch between different tones for fingers and pick playing, I also use the many possibilities to add a bit of grit to your tone, especially with the Bass Driver model. All these effects are easily switched in a live situation via the ingenious menu system which allows you to pick out the programs you require for a particular set. So many options and hours of fun and fiddling, make no mistake, this is a great bit of kit for the money and something I'm sure will stay in my gig bag for many years.