Has anyone ever used auschwitztour.com?
I'm looking for a day-long tour of Auschwitz-Birkenau (English-speaking tour) and auschwitztour.com (without an 's') is about $12 cheaper than all the rest (99 PLN vs. 159 PLN)... other tours being auschwitztours.com and Escape2Poland.com. They all include hotel pick-ups, guided tours of both camps, and a film screening - can't see any real difference.
Any advice on which tour to take? $12 isn't a lot per ticket, but when there is a group every bit helps - but this will be my only time in Krakow so I don't want to go cheap and find I missed out!