Heavy duty with replaceable wire cutters (not strippers) = New version Surge
If you think the Surge is too large then you'll need to remove heavy duty from the title.If you're not going to modify the tool but still want replaceable cutters then you'll left the OHT, Signal and Rebar.OHT - spring loaded pliers and flicky action good, but it's the same size as the Surge.Signal - comfy pliers and comes with a pocket clip, limited tool set no scissors or diamond file.Rebar - nice and small, but thin blades and no scissors or diamond file.Of those three I would go with the Signal.Modifying can change all this up though, for example Charge handles are more comfortable than Rebar handles.
Surge can be clipped. And it has a nice pouch, where it fits in closed or opened position. Clever and ergonomic.
I´d go with the ST300...But it should be for the heavy mechanic duty. I´d get myself a Knipex Combination pliers ... and a Vic Swisschamp. And a pouch for my belt to put the two tools and a flashlight in there. But that´s just my opinion.