I like a bowl that is easy to clean, made of thick, durable glass, and has a rather long stem to allow the smoke to cool off a bit.
The cleaning part is important to me.
If you are feeling warm and fuzzy, look for a piece made by a local artisan. They are often comparable in price, since there is no cost of shipping from Pakistan and only one intermediate vendor- the actual shop, rather than a wholesaler- so you are getting a quality piece AND helping the local economy! :hippy: