At this rate of buying and returning your laptops, I can't imagine how quickly your initial investment in your first 17" MBP is going to eventually degrade to 0!
Well I lost a $100 on selling my first 17" mbp and if I would have returned this 15" mbp I would showed them the green led problem on the magsafe and I know the manager pretty well by now and she's been very nice and awesome with me since I've bought a mac pro, 23" ACD, 20" ACD, 2 macbooks (for someone else), 4 iphones (unlocked and sold them for 1k each

when the geohot was going on) so I would get an exchange with no restock fee. Plus I had a good use of this 23" ACD for over a year now and probably can get around $600 since its covered with applecare and I would just use the $700 to pay the difference for a 2.5Ghz 17" hi res mbp.
But I decided no since I do remember for me though that the 17" hi resolution was too small at times and made me squint alot. Plus I still think the 23" ACD monitor looks better than the 17" in colors.. just so vivid and the 23" is much bigger as well.
Now that I think about it the 15.4" mbp feels like the perfect size to lug around (feels small to me) and great mobile and the resolution is perfect on my eyes and still looks very nice and vivid with led backlighting. Also just docking it next to the 23" ACD is perfect for the resolution for me to sit back to view the 23" ACD + 15" mbp's screen. I remember I had to sit a bit closer for the 17" hi res docked next to the 23" ACD since everything was so small but not with the 15" mbp.
Also not to mention that the speed feels exactly the same among my previous 2.5Ghz 17" vs. this 2.5Ghz 15" also ran the xbench and geekbench and its exactly the same score, I think that's pretty awesome for me to save $500-$600 by sticking with the 15" mbp. Especially if I wanted the 2.6Ghz ultimate 17" hi res mbp from the applestore I would have to fork well over $600 just for the bigger screen and a bit louder speakers.
Now that I have the 4.5k back that I sold from my mac pro's sig, I'm a happy camper again!! Money in the bank is always welcomed!!
My next upgrade will be nehalem mbp sometime next year.