I don't hear much talk on the 2100 series clear coat. I thought all the clears were the same once they are dry and the solvents are gone...If this is true, why not save a bit of money and use the 2100 series clear or one of the the 2020 euro clears, rather then the more costly universal and ms? I understand that the ms and universal will remain easier to buff, however if you're going to doulbe clear why not complete the first session with a less costly clear coat? If you are going to cap it anyway, why spend the extra on ms or universal on the first session? If every other manufacturer makes clear that "hardens up" and many are used to using those types, why not just use the 2100 series clear which has the best price or the 2020 euro in either configuration? Thanks for the help, Dan.