These are three work sets at 85kg (185lb). Note that the video has been slightly sped up by the conversion to AVI.
In the second set I'm having trouble keeping my knees out. I suspect that I may be going too deep as I don't always feel the bounce at the bottom of the squat. I also noticed that my heels sometimes lift off the floor slightly.
I'm thinking that I should drop the weight to 65kg (or possibly lower) and work on fixing my form issues before progressing too much further.