Well, this was my first tie with zazzle, and I'm quite happy with it (as is my math teacher colleague). The colors stand out well on the actual tie. The only difference from the picture is that the top pi is not visible on me, it's under the knot. But the first line, 3.1415, is quite visible, as is the rest of the printing below that.
I designed the tie on Monday, and got it in the mail on Wednesday (I shipped UPS ground, but I only live about 30 miles from Zazzle).
I'll post a photo of me with the tie soon.