I detailed my car a couple of weeks ago and it came out really nice. I used #9, then Blackfire Polish, a Teflon Based Sealent, Blackfire Sealent, then topped it with S100. My question is how long does that S100 usually last? I wonder, whats better, the S100, or NXT? I plan on using a .25 car wash sometime today, (I have very hard well water) if I'm carefull, will my wax be safe. I handwash there with my 100% lambswool mit from Autopia and NXT Wash. Can NXT be applied over the S100 Caranuba? Will I get a good shine, or will it not matter? From everything I read, the NXT seems to be a better protectant. Thanks in advance everybody. :xyxthumbs