I've used both. Zaino clobbers Meguiars on ease of application and removal and for me, that was reason enough to stay with Zaino. Aside from that, Zaino also lasted a lot longer than Meguiars ever did. Not saying that Meguiars makes shoddy products; their endurance tire gel is the only rubber finishing product I use. The only downside I see with Zaino is the upfront price premium, but after you take into account the durability of Zaino, I think it's the better product.
Don't knock it until you've tried it...
