How much are you looking to spend? Name brands get expensive quickly.
If money isn't an issue, Zob makes some sick stuff in all different sizes. Everyone has their own preference, if you really don't care how much you spend Sovereignty is probably one of the top names.
Here is a site that will show you just how expensive things can get.
http://aqualabtechnologies.com/
Currently i am using a "Bent Glass" piece, it was about $250 out the door. It has a 5 tube downstem, and a showerhead perc, stands right about a foot tall. Significantly less expensive than a lot of comparables, but the logo has already washed completely off. I prefer to see things in person before i buy and typically frequent Mile High Pipe and Tobacco in Westminster. Lots and lots of shops, in my mind its best to go look for yourself and see what you like.
My dad still runs an old ceramic bong, and it seems like the passing of Amendment 64 has made these much more available, i was able to replace my dads with one that was almost identical, for $35.