Trying to figure all this stuff out. Diffusion, Percs, Recycling, Nails, etc, etc. Do they make oil rigs that also has a bowl so that you could vape some flowers if you wanted to? Or can you take off the oil rig part and put on a bowl part and vice versa? Is a $300 glass piece really that much better than a $100 piece? Are the expensive ones just for show? Then I noticed that there are different styles and types of percs and diffusion. What difference does it actually make? Regardless of the style or size or whatever, the vapor is still going thru the water, so why are the bigger spendy ones better.