A Monster in a little box!
What can I say... this little monster tears thru even working with Photoshop CS5! I go between Xcode and Photoshop a lot and wether its compiling in Xcode (very fast!) or manipulating photo's , I find very little wait time. The 128GB SSD drive is just great and I suspect this really aids in how fast things happen. I serious love the the approximately 16 second startup time and near 3 second shutdown. No PC laptop I've ever owned could even get close and I've owned some I7 based spec'd out laptops.
Finally it's diminuative size is so nice for sitting on your lap at home as there's almost no heat, noise or weight.
Sure these laptops cost more, but in the over 10 + years I've owned mac's I've never had one fail, freeze up or experience infections. That's one heck of a record.