Hi and welcome here!
Crawler or Holy Diver would be my fav. allround bridgepickup in alder, but I recently discoverd the VHII as a great rockpickup in my strat. I have the Crawler too and it does (nearly) everything in my HSS-strat. It's beefy, warm but balanced and a bit compressed (just a bit, don't worry it has enough pickattack and articulation) which I like for searing solo's. Crawler has PAF-dna, where the Diver has more of and oldschoolmetal-signature, but can do classic rock too.
I don't have experience with the Cold Sweat. It's famous as a Les Paul-pickup, but could be too bright in an alder bolt-on guitar. The VHII sits in my American Series HSS-strat and it's a great vintagehot rockpickup, dynamic, articulate and screaming on demand. The VHII is overall a bit leaner then the Crawler, thought the punchy tones are to die for and the VHII is not thin in a strat. It's def. more percussive then the Crawler, yet balanced and cleans up to a nearly singlecoil vocal quality. Btw, the VHII-neck is praised a lot on the forum.
Choice is matter of taste. I sense the VHII might be suitable for the described tones and style.