Haven't used that particular pedal, but I've got a DigiTech Hyper Phase and I've had a couple of others (the flanger and chorus). The phaser is okay, I've got one setting that I use for everything and it suits me fine, but it's quite versatile if you want it to be. It's very brittle and digital sounding though - and it swallows all the low-end from your tone. I'd never use it on a recording without laying a dry signal underneath it.
Like I said, I haven't used the Bad Monkey, but based on my experience I wouldn't want to use their distortion pedals if they sound as harsh as the phaser - especially as an overdrive for an amp.
Steve