- The Emerald is imo a no-go in an alder bodied strat.
- The VHII is the hottest BKP 42 AWG plain enamel wired magnet. Feels nearly as hot as my Crawler. You could describe it as a vintage Nailbomb. It's a very focussed, noncompressed and therefore dynamic/touchsensitive pickup. It provides a great rocksound and screams when you dig in. Has a good balance with strong, but not shrill topend. Quite some bass too. Not a friend with all amps imo, but doing a great job on my Rockerverb 50.
- Abraxas is a fatter, hotter Mule, and will beef up your strat without loosing too much vintageflavour.
Further, you might want to consider a Crawler, which imo is a fabulous pickup in bolt-on alder/ash guitars. It has the midrange and the power, with thick solonotes and roaring midlows, yet the PAF-pedigree still shines through. It will do hardrock and oldschool metal, but will clean up in a good way. The cleans are really nice, and this pickup provides one of the best splitted tones.