After receiving mine today and basically adopting it as my daily driver right away i am pleased to say they fixed everything that was wrong with any laptop ever.
And the UI lag that I've seen on display models has vanished.
That sounds great. Congrats. Im still on the fence, but I really really want it. I have the OG 08 MBP Unibody, the one with the "user replaceable" battery cover. Its been going strong for 4 years (4 years this June, actually!), and I told myself I would buy the redesign. Its not even going slow (2GB of RAM, still, no upgrades at all). No slowdown, and the HDD is not even close to full. It can go another 2-3 years. Its truly amazing.
Thank god for this beautiful glass trackpad, it looks as new as it does the day I bought it. The whole body is, in fact. Very durable if you dont go slamming it on shit.
I remember when I first got it for 2200, and all my buds were calling me out:
"2200 for an Apple? You're just paying for the brand, sheep."
"2200 could give me specs 3x better on competing laptops"
"Really? 'Glass trackpad' and 'unibody' construction? You really drink that Apple koolaid, Jaydub. Enjoy your $2k glass trackpad"
One bought a Dell, one Alienware and one Sony. All, higher spec'd than my MBP at the time. All three laptops are long gone from slow and choppy performance (even after defrag, spybot, reformatted 3 times on average). Their plastic bodies looked all nasty after a year, the trackpad was a glossy mess. Fingers couldnt glide on it.
The ones with the Dell and Sony bought new laptops twice already, and the Alienware went to a gaming desktop (which he rebuilt twice, not from wear but for new components). My laptop still does everything as smooth as the day I bought it.