I used to use it often, then I got a bad batch. They replaced the yeast, and it's still in my fridge.
The real advantage used to be the price- it was about half the price of s05 and S04. But when they redid the packaging, they doubled the price so I haven't bought it.
It's really clean at under 60 degrees, and makes a lager-like beer at that temp. Above 68, though, it starts getting weirdly fruity and at 72 degrees or above it gets positively foul. So it's a good yeast if you want a super clean beer in a cool ale fermenting temperature. I've found better yeast in the last few years, though, that is cheaper (or at least, the same price).
Broken Leg Brewery
Giving beer a leg to stand on since 2006