Hi. I want the best dashboard mount for my iPhone 4S. It shouldn't cost more than $40. I want it to be stable - so it won't shake because of every little road bump. I want it to be durable. It's also pretty important that when I click the "home" button my iPhone won't wobble about everywhere. I saw a few options: 1. Luxa2 H5 - Can it stick to the dash as well, or only the windshield? 2. http://www.amazon.com/Satechi-Unive...hboard/dp/B002K9IPOC/ref=cm_cr_pr_product_top - I still prefer the Luxa because of the flexibility, but remember it should be able to stick to the dash. 3. http://www.amazon.com/Kensington-Wi...iPhone/dp/B0031U1AT6/ref=cm_cr_pr_product_top - Is it any good? Thanks.