I've looked at those Alligators for a while now. Only Knipix I've got are some 8" diagonal cutters and they are great. Are the Alligators/Cobras truly "that much better" than traditional Channellock style pliers? I don't need a lot of persuading to get me to buy a pair.....
it depends.. are they a whole new world of tool? no. but the head is alot thinner, allowing more access.. it uses a box joint so there is no, and wont be any play between the sections.. also - they offer a v grove jaw, but the "v" opening is smaller than most other brands, so they will let you handle much smaller bolts or nuts with a standard 10" pump plier.. the handles seem thinner, the tool is also lighter, and the action is unbelievable smooth.. the 10" alligators were my first knipex purchase, and i was really impressed with them.. i think i played with them all night.. lol
here- you can see the different joint used in this picture..
also - if you prefer the cobra's - craftsman and Klein also sell them rebranded under their own names, so that should tell you something..
amazon has 21 reviews of the 10" alligator pliers, 17 are 5star, 3 are 4star, and 1 - 3star