Zune HD or iPod?

My Zune was fantastic, but it is now broken.  My brother's broke as well.
 We owned them for 2 or 3 years I think, so I'm disappointed in that aspect.
 I'll admit I was quite rough with mine and it bounced off a few rocks and
tasted a bit of salt water in its day.  But is the iPod more reliable?

I mostly listen to podcasts and the radio.  Everything I like always seems
to be free, so I never have a need to buy or subscribe to music or
literature or anything else.  So I'm focusing on reliability.

Being able to jump ahead 30 seconds and speed up playback is also important,
we all know that certain .NET podcasts can be a long hard slog at normal
speed.  (Not the ones made by people on this list!)

Thanks,
Mike