I don't think you missed out on any amazing Dell deals from what i've been observing. IMO Dells are pretty reliable and cheap for the price you pay. If you want something rock solid, get an IBM. The IBM you won't get tired of but the dell will look pretty ugly after a year of abuse. i would know. The paint on the Dell's tend to wear off quickly if you aren't a neat freak.
In short, i would recommend an IBM laptop for stability and re-sale value (IBM Laptops tend to keep their values even after a year of use) and a dell for best price-performance ratio. Just dont expect to re-sell it for much.