Utility Knife

What knife do you recommend for this?

I work in a bike shop and I am constantly opening bike boxes with scissors, but need something more efficient. For my b day/holidays, I was looking for either a high quality folding utility knife or folding pocket knife to cut plastic tie downs and card board boxes. Anything under the sun (money not really an object) Help?

i would recommend the folding box cutting (utility) knife simply because replacement blades are cheap other than that get a stainless Case
oh yeah and stay away from gerber knives you have to grind a new edge on them

Stanley Utility Knife: Pint Sized Homesteader

[affmage source="ebay" results="10"]Utility Knife[/affmage]