Balron Bone Armor is one of the top pieces as you are going to get all of the main stats and bonuses. With 8 LMC and it being a Bone piece, it will count toward the LMC bonus if you're going for Bone/Studded suit build. It's missing some Regen's, but you shouldn't need to rely too heavily on Regen's on a sampire if you are leaching back enough life / mana /stam. Overall, it's going to be a great piece for most any Warrior type of build.
I don't know if I have seen anyone use the Basilisk chest piece in quite a while, atleast for a sampire. If you're going to refine your suit for higher resist caps, you likely won't need much DCI and should be getting it from jewelry and other items. As I just noted, you probably don't need a ton of regen since you should be leaching most of that back. The LMC and the individual resists on this piece are all lower than the Balron Bone Armor piece. The 10% Damage Eater is a nice bonus if you're getting all the stats you need on other pieces, but it's not typically a mod you see too many Sampires looking to add to their suits. A Sampire should already have alot of ways to stay alive (i.e., Vamp Form, Life Leach on Weapons, Confidence from Bushido, Close Wounds from Chivalry, maybe even Heal pots), so mods like Damage Eater are somewhat overkill.
So between these two, I would go for the Balron Bone armor. If you can't find one, try to find another high end Chest piece as opposed to using the Basilisk Hide. Just my opinion ofcourse ... Good luck!
