Revised Vampires

this is my vampire deck ive been working on, and its coming together nicely. i played it at a box tournament and faired ok, but ive tweaked it in the last couple of hours. my weaknesses seem to be jund and open the vaults, which are popping up quite a bit lately. i was running mind sludge main, but felt i needed more creature removal than having them discard their hand. i also prefer the pulse tracker over the lacerator, if you swing through you still get the 2 dmg without paying one life every upkeep. i decided to run haunting echoes in my sideboard, it worked well against open the vaults or anything else that brings back creatures. any thoughts on this would be greatly appreciated. all of this has been built on a budget, trading when i can or buying cards when i have the money.