First for the Kudos...Erik and Seattle Forrest: Wow, great shots, both of you!

Last big tour across the country I had a decent point and shoot. 2000 or so jpg pics fit on 4 2gb cards. This time I am going to take my D90 and a couple lens' when I head up to the Yukon. I am trying to decide on what type of storage: multiple SD cards or a portable hard drive. I am leaning toward Iomega 64gb solid state drive rather than the portable hard disk I already have. Anyone use one of these SSD's? Any other thoughts?