It's unique. I love how it looks when you finish the frame. You have to work carefully when building it because it's tiny and you should always think of saving space. If you don't change your parts often, this is one of the best frames you could have. But if you like changing parts and customising your parts every week, it may be hard to deal with it. But if you're ok with you parts and want to have just one quad, then you can get Sigan without hesitating. You'll love it. If you want to have more than 1 quad, then definitely your second frame should be a Sigan.
I bough red Sigan but the lipo strap didn't come in red. That's the only disappointment I had. Other than that, everything was great.
Pros: Light-weignt, Different color options Very protective for the parts inside
Cons: Doesn't come with antenna tubes Hard to prevent the props touching a 4S LiPo No extra spare screws inside the package