Slip joint pliers are an american thing,In Europe and Asia they use the combi plier which is like a lineman with the gas adjust cutout right before the cutter.Try a Snap on 47ACP
for a real good slip joint as Merkava suggests it will dispell ill feelings from using dollar bin junk.Utica,Kraeuter,and Pexto made many styles in the past that are flea market finds but still servicable.Sometimes the angled head of the channelock just doesnt cut it in tight spaces.I have been on job sites where everyones linesman pliers were not wide enough to get around something >I always keep one or ten in the shop.