I ended up getting the Speck Satin Black because I read great reviews and it was cheaper at my local college bookstore than the Incase (for my 13" MBP yesterday and it is very nice). Perfect fit and feels great, it is also redesigned to fit the 13" MBP.
I thought about getting the Incipio Feather for the UMBP until I read a bad review on Amazon that said a lot of them had a problem with drooping plastic due to not enough tabs holding it in place.
Here is a pic of what the problem is
Feather Droop...
I am extremely happy with the Speck Satin though, like I said it fits perfectly and feels amazing. Very sturdy case. I've ready many reviews and user feedback, some prefer the INcase some prefer Speck, IMO they are pretty much the damn same.