This photo from a 2013 Premier Guitar [article](http://www.premierguitar.com/articles/19620-rig-rundown---russian-circles-mike-sullivan-brian-cook) shows Mike Sullivan's pedal board, which includes a Mesa Flux Drive.
"I've recently bought this ... and it's awesome, it really is." -Rabea briefly talks about it in Dorje's 'Pedal Board Gear Tour' video. He also mentions his YouTube review of the pedal [here](http://bit.ly/10OSyg8).
I was using a Timmy on my board until I got this. I use it to add a little dirt when playing bass with a pick. But, it's a great all around pedal that can get really grindy. Mesa stuff is super reliable. Heavy duty build.