So I'm still using my modified mid 2009 MBP 13" as my daily driver (software engineer) to run three 1080p Dell screens (using external DisplayLink cards). I've been holding out for a machine worth upgrading to for about 12 months now and had high hopes with Haswell but between the lack of a quad option in the 13", the trackpad issues, the retina IR issues and the screen lag complaints I'm completely unconvinced theres a sweet spot model for me. I dont want a 15" as I do move around a lot with my laptop. Feels like a compromise of spending time trekking back and forth to the Apple store fixing a machine that's a bit faster and might be able to directly drive all my external displays (albeit with stutter/lag). I assume the trackpad issue will be fixed soon but the IR just seems inexcusable. If I could squeeze another bit of performance out of my mid 2009 I'd nearly just stay where I am and see what Apple / alternatives are available in another six months time.