I'm using the basic model of mac mini late 2012, and had been using since early 2013. The reason why I am considering changing back to PC is simply that I am using win7 almost entirely on bootcamp and hardly use the mac component. The system is getting slower and slower and I am not sure if there is hardware and software issues both present. The USBs often cannot support multiple devices for some reason. I wonder if I can get some advices, with my following requirements 1. fast system for multi-tasking but not for gaming 2. support windows 7 3. had more and reliable usb ports (currently i had 4) 4. able to fit into a typical check in luggage. 5. relatively value for money 6. do not require DIY.