I bought my first Mac back in early 2007 and then later upgraded to the MBP 2007 version via a purchase from the Apple Refurbished Store. It's time to upgrade that MBP (it's served me well). I'm thinking about getting an iMac this time around though since I use my MBP mostly as a desktop since I bought an iPad 2 several years ago. Question: A brief look at the refurb store reveals that the vast majority of all Macs are "stock" configurations. I do however see a few that are build-to-order (BTO) configurations. Has anyone here purchased a non-stock Mac from the refurb store? If so, how long did you have to look before finding the model you wanted? I'm trying to find a 21.5" iMac with 16GB of RAM but haven't seen any over the past week or so.