Even I got confused by the title!
But here it is, fresh from Fedex delivery: the new Mac baby (1.8 Intel Core 2 Duo, 2 GB of memory, SSD)
Cute, but not too small. Snappy, but not always as fast as Big Bro, the MacBook Pro (which -by the way- is a 2.16 Intel Core Duo of the first generation. 2 GB of memory. I got it about 1 month before the Intel Core 2 was announced) .
Unscientific Speed tests
MBA start: 22 seconds
MBP start: 58 seconds
Opening any app: MBA way faster than MBP
Loading Safari pages on the same wireless connection: MBA way faster than MBP
Opening a picture in Photoshop: MBP here is faster than MBA
22.6 MB pic - MBP : 2 seconds
MBA: 4 seconds
MBP was faster in applying filters to large pictures too.
Movie stuff will have to wait... I'd stay than overall, MBA felt a lot snappier than MBP, but it might not be true for processor-intensive stuff.