I don't own an Ipod simply because I want to be non-conformist. Everyone I know owns a Shuffle, Nano, Ipod Classic, or Ipod Touch. My problem with Apple is that they upgrade their stuff every year and basically you're screwed paying too much on something that will be obselete before you really use it to it's full potential.
They own the market. I'm alright with that. But I'd prefer my $$$ go elsewhere. That said, I know I'm going to sound hypocritical - but I own a 30G Zune, and an 80G Zune. Microsoft has been taking my money for years, I figured why not keep it going.
At least when they came out with the second generation of Zune (4, 8, and 80), the upgrade software was made available for the Zune 30. I have WiFi and can update my inventory on my home network wirelessly - no one I know with an Ipod can make the same claim. The sound and video quality are excellent, the FM tuner is a nice plus as well.
Microsoft has indicated it will continue to provide updates to support advanced functionality on the current models even if/when a new product line rolls out. My Zune 30 had additional WiFi capability due to better software when the second generation was rolled out.
For running, I have a Creative Zen Vision V-Plus. The plastic casing and flash drive have helped this thing stand up to abuse, sweat, and dropping.
Until Apple starts charging the appropriate price for its functionality, I will continue to look at every other media player in the market - because smaller companies are trying harder to build their customer base - not spurn the consumer base that is stuck with last years tech.