I love my Denise's.
They are wonderful! I'm thinking that if the planets ever align and I get to a store that has them when I have a coupon, I will buy a set of Boye's. If I don't like them, I can always trade them here.
Why would I need two sets of interchangeables? Because I am so promiscuous with my projects that I actually have all my cords in use at once and I have other things I'd like to put on the needles.
I bought my Denise at my LYS and if a piece breaks, I can get a replacement from the LYS rather than having to mail it to the company. They are guaranteed for any damage except pet chewing. Apparently, my LYS has a distributor license with the company (or some business term, whatever, they're official