After some considerations, I found myself couldn't be too happy without a decent command line interface, ergo I bought a 15" MacBook Pro and upgraded it to 16GB of memory. The office suite that I use once in a while is taken care by Win7 running in a VM.
I report that I am a happy man now and have no regret. Every cent spent on MBP is worth-while. This post is not meant to hard-sell Apple laptop, just sharing my own shopping experience.