BKPs known for a leaner, controlled low end and good solo bridge tones that work in a metal context range from the Holydiver, Rebel Yell and some lower-output guys like the Black Dog or Emerald, to some more modern models like the Juggernaut. Personally I like old-school death metal tones so I lean more towards the Holydiver myself.
I would say you should focus on how you want the highs and high-mids treated - if you want more prominent, aggressive highs, or smoother highs; the sense of string definition, or how separated the strings sound, and also how much output you're looking from the bridge overall. Other than that you'll have to use your own ear to get a sense of what you'll be comfortable with.