I'd go with Savage Worlds. I can find almost all the appropriate gunlsinger skills/Edges in Deadlands, and you can make just about any type of pulp character using the basic Savage Worlds rules.So, hivemind, what are some suggestions? I prefer crunchy over rules light, but nothing is a deal breaker.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.