Underrated = Cutlery Corner knife show for entertainment purposes
Overrated = Anything priced out of my purchasing range
"Folks, we got them thar zombie green handled tanto folders (which by the way make the best skinning knives!) for 2/10 of a penny each and were giving them away for about a dollar each!" The Fire or Police Dept knives are the ones that kill me, these morons must really hate first responders. They always suggest that they would make great duty knives. Only a moron would give someone in harms way one of these turds as a serious gift. I do laugh a lot watching it though. The way that guy handles knives proves just how dull they are. Otherwise he wouldn't have fingers.
As far as what I consider over or under rated I'll base it on what I've actually owned or handled.
Under-rated- Cold Steel and Spyderco.
Cold Steel switched to better steel and they've been getting my money quite often since I tried out one of their CTS-XHP folders. The edge retention on the new steel is superb and my older AUS8A version beat all others I have or had in AUS8 for edge retention. They also started adding some color to their knives and have made some that are more focused on EDC than Tacticool.
Spyderco because they come up with so many out of the box designs and aren't afraid to try new steels. They just don't get enough credit for taking chances. A Manix 2 LW is my constant companion at home. It's so light and flat that I've went to bed frequently forgetting it was in the pocket of my shorts or sweats.
Over-rated- SOG, Ontario, Hogue, and Spyderco.
SOG for poor edge retention (I have a CS Recon 1 in AUS8A that puts SOGs AUS8 to shame), and poor fit for wobbly blades at the pivot.
Ontario for poor edge retention, I just wasn't happy with the edge rolling over in some spots and then the blade chipped in another.
Hogue for materials to cost ratio. 154 steel and G10 isn't worth what they charge, I can get so much more for the price from Spyderco or even Buck if I need made in the USA. They didn't feel any more ergonomic to me than most others, and when you have so many manufacturers making products with better steel and using the same G10 you better have something better.
Spyderco for going too crazy on designs and MAP. The Opus is the perfect example of a knife that looks like it was designed to cut the user. Some designs are just off to me. MAP pricing, the reason given by any that do it is bull crap and they all know it. It feels like being lied to and I hate that. Just say that large stores that buy the bulk of your products for resale don't like little guys selling at a lower price. And since they can offer free-bees that the little guys can't they start getting that money that used to go to the small shops.
Yes I know that I put Spyderco as both. Just like most people I know, they have things I like about them and things I don't. It's just one of those funny things mature people can do. I haven't handled or owned a Benchmade or Kershaw/ZT. BM mostly because of materials to price ratio, K/ZT because I have zero trust for liner or frame locks. I can't say one way or the other for both.
And cue the hate in 5...4...3...2...