I'm getting my 2014 GTI professionally detailed tomorrow. (3-step with Optimum gloss coat) I have the option of getting the wheels sealed with opti-coat for an extra $100. For those of you that have used opti-coat on your wheels, is it worth it? I'd be interested in your thoughts regarding protection, durability, longevity, etc. I dropped off my car at the detailer this evening and told him I'd do some research and let him know in the morning if I was interested. Thanks in advance!