After a long time of waiting, the new mbps have finally arrived. and now they're out, I can't decide which one to get i was sure to order the 15", now as it is finally possible, with the hi-res display of course. but after comparing the 15" to the 17", i'm not too sure anymore, especially as they are pretty close in pricing. i guess i'll use it for pretty usual stuff and for imaging with aperture 3 and photoshop. as i'm not directly planning to buy an external display, it would be good to have a nice big screen. is the real estate on the 17" much larger than on the hi-res 15"? i like the smaller and lighter form factor of the 15" and i'm a bit afraid of using the 17" on the go due to its size and weight. on the other hand i like the look of the 17", especially the narrower bezel around the display. what have you got / would you recommend?