Like @Norther Brewer states, if you're going for a true representation of an ESB (Bitter, best or whatever you want to call it) then I would stick with traditional hops. Personally, for an ESB that I brew I use Challenger at FWH, then again at 15 min along with EKG. That's it, no dry hops or whirlpool.
I think the malt bill, yeast and fermentation, and carb levels also play a very important roll in replicating this style beer. For instance, I like to use Lyle's Golden Syrup (4-5% of grist) in my recipe. Gives it a nice caramel quality - IMO.
I think using more modern American hops you just wind up with a Pale Ale, albeit I'm sure tasty