I have a 2011 Mac mini Server with a quad core 2.0 GHz Sandy Bridge i7. I use it as my main production machine for Logic Pro X (plus everyday computer use), but I would like to get a smaller laptop in order to become completely mobile. The CPU in my mini is just fine for all tasks I need, so I just need a CPU that's not worse. For portability (and secondarily cost) reasons, I would like to get a 13" machine. I realize they all carry a dual core CPUs. If I get a top-of-the line BTO i7, for example in an upcoming Haswell MBP, I'm wondering if it can match my older quad core. Getting a MBA is also an option, but its clock speeds are quite low, I'm afraid that would certainly be a step down in Logic performance, but I'm not sure.