The Impact flys very well on an anhyzer line and will pull off a hyzer flip pretty well provided you're going to throw it a good 200 feet or more. I had it in my bag for a while but ultimately took it out because it is just a little bit too bulky in my hand. It is even more bulky than the other midrange discs that I carry in my bag. Ultimately it will come down to personal preference, but if you are a fan of the cheetah, then you probably won't be a fan of the impact as a substitute. It is slightly slower than the cheetah. I'd put a cheetah back in my bag before I put the Impact back. I actually carry a Leopard in place of both of those, but if you're trying to get away from Innova, that won't help you much.
You can always buy one, try it out, and then sell it if it doesn't work for you. I have one for sell. I'll give it to you for 10 bucks since you're a fellow DGCR member. It is red/pink ESP plastic and weighs 170 grams. PM me if you are interested.