sandisk

Considering SanDisk IV, SanDisk Ducati, or Lexar Pro. UDMA Cards - recommendations?

I've been using Sandisk III Extreme cards and am considering either the SanDisk IV, SanDisk Ducati or Lexar Pro UDMA cards. Does anyone have a recommendation for use in an A700? Apparently, all of those cards are based on UDMA specs. (I'm leaning towards the Lexar Pro 'cause a rebate makes 'em relatively cheap.) Any thoughts?