By far the best way to make hash is with bubble bags.

It is correct, as stated, that the hash on the street is typically garbage stuff. Stems, poor quality leaf and other material into a press-puck. True good hash is only trichomes and is usually soft and gooey like a piece of gum.

Using solvents and other materials to make hash oil or press leaves a residue which you can taste and spoils the overall flavour as far as I am concerned.

Keef or tumbling for trichs is better than solvents but I find the taste is a bit green as some of the plant material gets through.

With bubble bags you end up with a 99% pure produce of trichomes to maximize the high per quantity and the taste due to its pureness.

I picked up a set of bags from www.resinextractor.com and I am quite pleased with the results and the price. I have put through 8-9 batches so far and just love the whole process and what it can produce.