I'm in a 2008 S5 at the minute, the older one with the V8.
Yes I'm not surprised that you find it doesn't turn as many heads but that's what Audi is often about being very understated yet classy. I bet it's also fun for you to surprise a few people at the lights who think it's "just another 2.0 TDI"
Makes sense though if you weren't really driving the Z that much!