My new iMac arrived this past Sunday! It's replacing a five year old iMac, so the changes in technology really stand out. I have the 27" with fusion drive. I also got the trackpad and I really like it! A bit of getting use to, but much more control than a mouse. The other thing worth mentioning is I used my Time Machine backup for data migration and that process couldn't have been simpler or gone any smoother. I don't see a single problem with my new iMac, but I'm also not going to put it under a microscope. At some point I'll purchase some memory and do an upgrade, but after using it this past week I don't feel like there's a hurry. However, I did buy a four pack of Eneloop rechargeable batteries from Amazon. Just thought I'd put my first week impressions out there as I've seen so many negative postings. I hope you all love your new iMacs as much as I do!!