rMBP 15" issues....only two?

You are right. Lag is a software issue, so use Webkit nightly and make sure to install 10.9 when it comes out. IR seems to be only with the LGs, so you do not need a new panel every six months, just a new one if you notice it. Heat will not be a concern for your uses, as it is only a problem when you do intense work like 4K video editing.

 

GPU improvements not a big deal? If the 750m is used, it's comparable to a 670m in speed with GDDR5 memory.

 

The 650m is a great card, and also is easily overclockable so it can reach the 660m+ performance without heating that much. The 640m, 650m, 660m are said to be the same GPU with different clocks. And the 750m is a 650m with nvidia turbo boost 2.0, which means it overclocks automatically. At the end of the day, no great difference between the two.

 

about the LG panel issues, i do track a 500 page length problem in Apple support website.
but it seems that recently they rolled out version 2 panels, so if you received that unit highly likely that there won't be any ghosting issues as i haven't read any post of people reporting problems on the v2 panel.

 

I had my system in for a screen replacement, there was a pretty heated conversations going on with a Genius about the Rev 2 screen and how the IR was still there. Funny thing was the consumer knew more about the issue then the so called genius. Knew the product codes, and how the distribution of said panels worked. Even had contact info for an Escalation agent, this guy came in prepared. And the poor Genius tried to BS him, big mistake.
We got to talking and I told him mine was replaced with a Samsung Panel, then he really went off on them. Old guy was smart, he knew just the right amount of persistence and volume to get the attention he was looking for. That and I'm sure turning away a few customers in the store who where looking at the rMBP helped him a bunch, he stood right there next to the rMBP tables and demanded some satisfaction for his troubles, and he got it.

 

ah ... so the IR is still there even for v2 panels ... samsung is the way to go it seems

 

so how long are we gonna say it's a software issue ? it's been almost a year now.

 

I think you should really try it for yourself. I don't notice any lag myself, ecxept the resize performance of App Store...

 

It definitely is software. That is why Webkit makes the scrolling lag go away and 10.8.3 made things a bit better; we will see about 10.8.4. You do not need a 2.7 Ghz quad core i7 processor and a 650M to run 2880x1800.

 

This may be the first instance of IR on the SJA2 panel outside of the sketchy Chinese website where someone was claiming the same thing (we think). You should have invited the guy to jump on MacRumors and tell us more about it!