I had some INSN, and I must say they have a good community going. But I do think they are dependent on other groups for their development (
http://cryptocoderz.com/, CryptoCoders). CryptoCoders are involved in other coins as well,
http://cryptocoderz.com/#portfolio, and I think this slows down development. It was one of my first coins that I bought, I bought the old INSANE coin and later did the swap on Novaexchange. I was a fresh newbie and bought on a high (6425) and then I was kind of locked in. The community are very amped on their coin, and they have a lot of plans, but I do not think it has much intrinsic value, for example 20 confirmations are required to transfer coins, which takes a few hours. This kind of removes the idea of being a viable currency for commerce as it is way too slow, but the community believes this improves security.
I cannot say what the future will hold and I wish them all the best, but I think they are missing some direction and in the mean time the coin is losing value while other coins are rising. For this reason I sold all my coins.