Icetech
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You're currently using over-the-head, headphones right? Another thing that will help with the drum bleed is in-ear monitors. Like these:
Shure SE215-CL Sound-isolating Earphones - Clear
Single-driver In-ear Monitors with Detachable Kevlar Reinforced Cables and Accessories Kit - Clearwww.sweetwater.com
They are sound isolating. They will keep the external volume of the drums down so you don't have to blast anything in your ears to compete.
I can't use IEM's (ear issues) But i got a pair of Ultraphones... i can't imagine anything stopping sound more than them, i can barely hear my snare/kick in them.. only downside is they feel like they are squeezing my head til it's gonna pop..