Woot! I found another thread with a bunch of other people who felt the same....that the dash lights were way too bright. I did learn that they dim some, but not enough for some people (which probably would include me). The quick fixes were tinted cling film (of course). But the better solution is to replace a resistor with a stronger one:
Blinding Dash Lighting Tamed - Hyundai-Forums.com
I am so happy! I know it seems odd that dash lights would be a deal breaker, but with the amount of night driving I do (long winters up here with it getting dark early), it was important. LOL....I "suppose" it could be a sign of getting old, but I'd rather not face that possibility just yet. But then again, I suppose buying a Santa Fe over a Genesis Coupe is already a pretty big hint. Doh!
Thanks anyway. I'm still interested if anyone has any other things that they noticed after buying that they wish they knew up front. (2010 Santa Fe Limited no Nav)