Hello everyone, It's time for me to get some polishes and after a lot of comparisons and advice search, I've decided on the Menzerna line. It's so pricey but I guess you get what you pay for, so I expect it to all be worth it. Anyway, I was looking at the polishes on Autogeek and I want to know what the difference is between IP and SIP? Also, when would I use nano polish and when would I use micro polish? It says 106ff and the SIP are for scratch resistant coatings, does this mean that they would be too aggressive on soft clear coats that aren't very scratch resistant? Last but not least, what site do you guys buy menzerna products from?