I got a MPBB about 6 months ago and it's been accepted well into my tool kit.
It's broken all the beads, I've used it on, including the large Harley rims.
I pour some lube all the way around the rim and gently worked it 360 degrees.
Before you know it, pop.
I don't go at tire work like a bull in a China shop, and have gotten to where I'm not tearing up my rims and scratching them. I'll use rim protectors when required.
By the way, I've found Shinko's at Pinwallcycle in Ohio, the cheapest anywhere, with free shipping. They sent 'em FedEx, and were in NJ, in four days.
A front & back 705 for the Glee, $149.