Hey there. I'm currently using a mid-2010 17" MBP as a backup computer and a mid-2012 13" MBP as my main computer. I hook it up to a 27" monitor and pretty much use it as a desktop. I typically have a web browser with 15-20 tabs opened, an email client with about 5 accounts to pull from, and Pandora playing music. Throughout the day I'll need to use Photoshop for light editing, Dreamweaver and a separate FTP client. That's pretty much it... I'll be looking to buy something new as my 13" MBP is really in need of more memory than can be had. I've been considering either a new 4 core 15" MBP or a 27" iMac. Would either suffice just as well as the other?