Zaino user here for 12+ years. Nothing is better for the price, and it's super easy to apply and remove. The newer stuff doesn't even require removal. I put this on my 335 in the parking garage at the Welt with 0 miles on the car, and had a great result driving in the Alps on wet roads.
Current: '12 E91 328i X-drive | '06 Porsche Cayman S | '00 Honda S2000
Notable Previous: '12 E92 335is | '10 STi | '88 E30 325iX