I had a silver-needle-style tea from Bangladesh, sold by Teatulia. It's not explicitly called a silver needle, but that's basically what it is. It's just called "White Tea".
I absolutely love it! It's completely unlike any of the other teas of this style I've ever tried. It has the delicate sweetness but it also has a sort of depth I've never encountered in silver needles from China (or the one I tried from Taiwan).
Another tea that is not a silver needle but is oddly silver needle-like is the Soureni estate Darjeeling Oolong. I'd recommend trying it, even if you dislike other Darjeeling oolongs, if you like silver needle and want to try something with some of its characteristics but a novel twist on it.