I might have an opportunity to buy a used IQsmart-1 scanner. I would like to ask a few questions on this machine:

1. Is the top glass an anti-Newton-ring type glass? IQsmart users, what's your experience dealing with Newton rings when dry mounted?

2. from Kodak's datasheet, it says "3200 x 7500 dpi (for all original image sizes)". Is this true? The seller told me that for 8x10 size the resolution is only 1180 dpi, I believe what he told me and this disappoints me. Could anyone here confirm?

3. What's the difference between IQsmart 1, 2 and 3? From Kodak's datasheet it seems the difference is the resolution, the 1 has 3200 dpi, the 2 has 4300 dpi and the 3 has 5500 dpi. Is this the only difference?

thanks in advance.