Randy Hansen is one of the best known Hendrix tribute guys and I think he gets the feel pretty much exactly right, but throws in his own improv stuff so he's not just an impersonator.
Not talking about Hendrix covers exactly, but some great players like Ulrich Roth and Frank Marino have made fantastic Hendrix-influenced music. And of course Robin Trower!! He gets branded a Hendrix clone - and he's never denied the influence for a second - but he takes that sound and takes it somewhere else, making it somehow very "English". There's no-one better.