Zaino is not "hard to get." There are distributors that cover almost every state, many whom take credit card orders. If you order it direct, it is not hard to get at all. Just call SAL up, or put a check in the mail. What is so hard about that? Sal turns orders around the same day he gets them, and I bet you would be surprised how quickly the products get to your doorstep. If you have concerns, why don't you call sal and get a feel for who he is and learn about his products.
There are many users of Zaino, on acura boards, miata boards, corvette boards, f-body boards, and more. There is no exclusive club. I think some people just read into things way to much. Also the cost of Z1 and Z2 is just over 20 bucks. It's carguy's opinion to say that there is a product that is considerably less money that is better. How are you judging better? It is true that some products that are cheaper can and will match zaino's shine. Different people have different needs and wants in a car product. If you are testing on shine alone, then maybe zaino is not for you, because most of it's strengths lie elsewhere, although it does have an incredible shine. Remember, there is more to a polish system than shine. If shine and cost is all that matters to you try shining your car up with butter, olive oil, or transmission fluid,silicone oil,etc,etc,etc..........you will be amazed at the shine for the dollar spent.
Lastly, Z5 will fill in very minor swirling with multiple coats. The truth is, different people have had different results with this product depending on the car. Once a car is perfect and some zaino is layered on it, it does an even better job maintaining a swirl free finish, as future swirls are in the polish layer and Z5 really does well here. Also note that Z5 will not perform miracles on a neglected car, which some people have used as test subjects for Z5 testing.