B.A. Labs Prop100 is the best. It's made in a US lab for humans than exported to Argentina for the use in animals. 100mg/ML 30ML bottle for about $100, you can't beat that!
Viramone is also excellent, but I'm giving the edge to Prop100.
Stay away from Brovel Prop, it's shit.
Dosages: Depends on what your stacking it with if anything. If you haven't been on in a while, 100mg EOD is pretty good, but I always hit it up at 100mg ED, and find I gain better than any other steroid while doing it this way. I've hit up 100mg ED for 8 weeks and gained 20lb., and that was a Prop only cycle, and it was my 6th cycle. Kept all but 3lb.!!!
PROP IS THE BEST!!!!!!!!!!