my first hershaw was one of those shotgun shell dealies with a kershaw blade in it that i got as an award from a company i used to work for. never used it for anything much, but i still have never had to sharpen it.
my first, that i personally bought for EDC, was a vapor that i carried everywhere about 6 years ago, i gave it to my son during his 2nd year stationed in korea with the army.
I now EDC a storm II plain edge i bought in 2004 and gave the wife the storm II serrated i bought about a year or so ago.
one thing i've always been impressed by is how well these take and hold a wicked sharp edge, no matter what model. design and price point are big considerations for me as well as customer service.