I like metal pipes, but didn't like the idea of aluminum, so I got a RayDiaTor, which has a titanium bowl, tube and screen. (Titanium oxidizes at higher temperatures than steel, and MUCH higher temps than aluminum.) I got the RayDiaTor Triple, which was not particularly cheap ($60-$70-ish I think), but it's a one-time investment, and I've already gotten my money's worth out of it.

I smoke maybe 1.5 grams a day, but that's shared between me and the woman, so I guess *I* smoke about half of that amount daily. In other words, not a whole lot. I could smoke more, much more, but I choose not to, as I enjoy being sober too. And I've found that by not smoking a lot daily, my tolerance remains pretty low, so when I do fire up, I get really baked, and I like that a lot.