About clones from dispensaries: I have found varied quality, passable in most cases. You have to realize the clones they are selling you are their culls, so buyer beware. You will often see a twig with a few leafs and wonder if that really is worth it. I have had the twig end up being the monster (quality wise) of the bunch and I've had them lame out. I buy twice as many clones as I expect to flower, that allows me to pick the ones that look the most promising.
My best clones have been from other sources, friends, etc.