First off, let me cut to the chase and say I LOVE this shoe.  It is quite impressive how today's shoes just beats running shoes from a few years ago (and the "old" style still being sold today).  I wanted a shoe that was very light weight and encouraged minimalist/barefoot running style BUT still have cushioning to my feet--otherwise my ankle and knee joints take a beating.  Some makers have minimalist shoes that care comfortable but no real cushioning (FiveFingers, NB MT101, etc.).  I ended up getting the highly rated Nike Free Run+ 3 and a pair of Reebok Realflex Transition shoes.  They are almost like twins and I love them both.

Reebok RealFlex transitions
-look absolutely fantastic (I have black/gray with orange soles)!
-very comfortable
-soles are very flexible and have great cushioning.
-lightweight compared to regular running shoes
-uppers a little more durable than Free Run+

Nike Free Run+ 3
-uppers are kind of stretchy and formfitting--super comfortable.
-look a little dorky because the sole has slits and does trap debris at times.
-super lightweight!!!
-soles are very flexible with great cushioning

Both shoes cost about the same and it would be hard to pick one or the other depending on personal preferences--I am glad I have both and it will be interesting to see which performs better over the long haul and has the greater durability.  Either would be a safe bet though and miles better than the "old" style shoes I wore before.  Right now, if I had to pick one, it would be the Reebok's because they look so much better, have a little better cushioning, and debris doesn't get trapped in the sole cracks like with the Nike.

NOTE:  for both shoes, I had to get a 1/2 size larger because they run a little small (the reebok less so than the nike).  For me that meant Mens 12 instead of 11.5 I normally buy.