I have a Synology 112j. Transfer speeds are acceptable, thought not phenomenal, but getting the unit to accomplish an app-related task, like scraping metadata for a video or start an airplay stream, is quite a chore. It just doesn't have the resources to do anything without a great struggle. Simple transfers and time machine backups are okay, though if I used my router's built in equivalents, they are faster. I'm looking at a QNAP TS-451, Synology 415+ and Synology 414. I'm looking at going with a RAID 5 or 10 configuration, maybe an SSD for caching, and while encryption would be nice, it's not a priority. The NAS isn't leaving the house like the macbook does. I may use IP cameras at some point, but I'm not really sure yet. I'd like it to consume little power, and run cool and quiet. This will be kept with the entertainment center. Does anyone have experience with these products?