I only have experience with golden teachers. I know that cracker dry, 3.5 grams and i am tripping BALLZ for at least 6 hours if not more. Using the PF tek you can get 2 1/2 OZ off of 12 cakes with a few flushes.
Here's a website where i get my spores, they have never been bad, and ive been really impressed with them.
http://www.earthstongue.com/site/38...e_Cubensis_Golden_Teachers_20cc_Spore_Syringe
Hope that helps man, good luck.
If you use that website, you must buy 2 syringes if all you are going to order is syringes... so total is 38 bucks plus shipping.