After reading lots and asking many questions I will ask one last time before I buy my new machine. Having already purchased the Apollo Twin Duo and Pro Tools 11 & 12 the iMac I have in mind is a late 2013 27 inch 3.4 ghz i5 quad core with 8 gigs ram....which i will upgrade to 16 or even 24 from the Crucial site. I must record bass and guitars here to forward to other studio for upcoming cd releases over winter. It will allow me to work from home in the Catskills instead of flying across country to do my parts. Good choice?