I've had a Boss Slow Gear previously, to be honest, not overly great. The effect has been bettered since, so if you have a Behringer/Guyatone/Multi-FX equivalent, then thats as good as you'll get.
Cool black pedal though .
I've got a Boss VB-2 which is pretty rare/expensive, and that is really cool!
Have a Meatbox to, although currently 'on the bench'
Si