Well I would recommend you to buy the latest apple products, so wait till july.
I disappointed that my macbook pro 15" 2009 is now very laggy.... (aging very fast) It was an awesome machine back then.
Add some RAM---put an SSD in there, a couple hundred bucks investment and that machine will FLY!!! It's still an excellent machine...a little maintenance and a couple of quick upgrades, you should be cool for another year or two
Other distinction is previous 2.7GHz has 8MB cache.
Yep....exactly. The current 2.8 and the (2012) 2.7 sport the 8MB cache. The new 2.7 is 6MB....the 2.8 is 8MB.
You're right. I don't want to hear that....
Fine. I give up. Get the half baked 1st generation now. You probably don't need a GPU that is more geared to handle the power hungry retina display anyways
'Half Baked'???? WTH are you talking about? I've got a pair of 15" rMBPs and they are FAR from 'half baked'...and the GPU is certainly 'geared to handle the power hungry retina display anyways'....this HAS to be the goofiest response (and not just directed @ you). The HD3000 I have in my 11" Air runs my ACD just fine. The 650m in the 15" runs in parity with the 660m as it's overclocked from Apple. The HD4000 for standard browsing, email, et al is perfect. Other than IR issues in some LG screens...easily remedied by a quick fix @ Apple if you have a screen with IR, this is one helluva laptop...in 25 years of owning both Apple and Windows machines...the rMBP is hand's down the absolute BEST computer I've had the pleasure of owning. Still puts a smile on my face every time I turn it on. I bought one last summer, another last fall (for my wife).
OP---I did the same as you. I ordered a fully spec'ed machine @ the time 2.7Ghz/16GB RAM/768GB SSD. I agree with ya too---once you're in that 'price territory'...who cares about 2 more C Notes. Order that 2.8/16/768 and be done with it

You'll be happy you did.
I think the biggest improvement we'll see with Haswell is it's power efficiency. My 15" rMBPs are currently getting anywhere from 5.5-8 hours not plugged in. Pending what my workflow and brightness settings are. For typical music listening, browsing the 'net and responding to emails with a V/M running...at 50% brightness, I'm easily able to get 6.5-7 hours. Perfect in my world. If Haswell allows a 20% increase...that's cool. But IMHO...that'll be more evident in the 11/13" MBAs....as well as the 13" rMBP for the iGPU increase in speed for different tasks (Gaming, Video editing...anything that WILL take advantage of the GPU).
Again...back @ the OP....check the 'refurb' section @ apple.com. You'll find 'last year's' machines on healthy discount...with the identical warranty as a new one. Possibly in the same config you're looking for too. This is an excellent opportunity to save $500+ on your rig
Good Luck. You're looking @ the right machine. I will add though, there are still some scaling 'challenges' with Windows @ the rMBPs resolution. Nothing that will make your machine 'unworkable'....but annoying none-the less. I would assume Win 8.1 (or whatever their new service pack will be called) should address some of these issues....as it's pretty evident with the Surface Pro (I bought one...and am really digging it!).
J