Ive owned both, 916 ts (spider, gtv) and i have a Brera
Nobody really loves the Brera (except us owners) and due to small number of years manufacture & small volume, i would say the Brera, especially the prodrives will become a classic, but on the other hand the 916 cup was an absoloute stunner and the shape of all the coupe's would not look at of place on a small entry level Ferrari. I never really like the 916 spider's read end, just did not work for me, they should have kept the coupe's rear end.
But im going to stick with the Brera, beauty is in the eye of the beholder and the Brera from any angle is just drop dead gorgeous, especially the back, imo that is.
If i had the money, i would have both!!