The thicker one should be boot grease. (like a light grease)
The thinner should be assembly lube. (like runny nose snot!!)

 

Got everything finished up over the weekend and the brakes feel great. Initial bite is much better now (yet still not quite as harsh as the g37 sedan loaner I had, not sure why). So far I like the stoptech pads I put on too. Feel pretty good for daily driving and haven't heard a squeek out of them. I ended up only rebuilding the front pistons since the rears still looked to be in good shape. I'm going to bleed some more fluid through the system pretty soon since I ran out just trying to fill it back up with 2 full quarts. The front left seemed like it might have still had a tiny bit of air in it while I was bleeding it before I ran out of fluid. So if I get that out it should feel even better.

Thanks for all the tips.