I was about to say has anyone tried Pyramid Golds yet? They're pricey but I'm thinking of putting a set on my Dark Star'd Warmoth. I think the Dark Star and flats would be made for each other. I've Used TI's that are great, La Bella likewise and I do love the cheaper option of Ernie Balls. Just thought the Pyramid might be worth a go. They're supposed to be ultra flexible and were used by Jack Casedy and co.