Opinions on Intakes

I am running a single plane air gap holley intake on my car right now but I would like too run a dual plane intake for more low end grunt. I would like some opinions on which would be the best to use. It is a 360 bored .060", about 9.5:1 comp., Purpleshaft cam (.484" lift), heads reworked with bigger valves, and a 670 Holley Street avenger Carb. I am running a 727 with about a 2800 stall and 391 posi rear.