Looking to piece together a nice bong

My girl and I have a 12 inch 2 perc (4 arm trees) bong with an ice catch. The first perc's 4 arm tree broke, but is still usable. It's time to upgrade. I've been looking at sites to build using different pieces and want to get a freezeable glycerin coil and a nice base with a perc or a ash catcher with a perc. I'm just wondering if you guys know of a site that has nice options at a reasonable price. So far I've only seen the glycerin coil for no cheaper than 180 itself. Do any of you have one and if so where did you get it and how do you like it?