Channellock makes some good pliers, but they are not the best. They are a USA made product at a very reasonable cost so on that part, they are hard to beat for your average user.
The bolt type pliers (adjustable) get loose and floppy over time. It's the ground pin types that aggravate me. The mechanism works best when one side of that pin stays put and one half of the plier pivots on that ground pin. If that ground pin ever gets to where it wants to move on both sides of the pliers, they end up getting "sticky". I hate sticky pliers. You can oil them and work them and work them and work them, but they'll still be sticky. They also tend to rust up in that joint pretty bad if you don't keep them lubed well.
I even have a pair of Channellock cutters that were sold under the Mac Tool brand name. Same as Channellock except stamped "Mac" and have red grips instead of blue. Those are my favorite cutters.
Channellock: 447
Mac: M447G
I hate the Channellock 337/338 cutters.