Hi all, I'm considering selling my 2010 iMac and moving to a 15" MacBook Pro with Retina. I am running Logic Pro X currently and Komplete 9 along with Amplitube 3. I mostly record guitars and use virtual amps from Guitar Rig 5 and Amplitube 3. I'd venture to say that a typical song for me would have about 10 tracks with most of them being virtual synths and drums but only 3 or 4 audio tracks with guitar. What kind of performance can I expect if I get a MacBook Pro with the following specs (I will be recording to the internal SSD drive and then offloading completed projects to external storage when complete) 2.3 GHz quad-core i7 16 GB ram 1 TB flash drive 2GB NVIDIA GeForce GT750m Also, if I went with an external drive for audio tracks would UBS 3.0 suffice or do I need to go thunderbolt?