Hardware Limitations?
I have regreted the update on a 4th generation iPod Touch (32Gb.) since day one. iOS 5.1.1 was snappy and responsive on this device; it ran like a well oiled machine. The update to iOS 6 seemed to create overall lag and studder in doing pretty much anything besides surfing the web with Safari. The degredation in performance was so pronounced that I refrained updating devices with more robust specs comparatively (a 4S and a 3rd gen. iPad). I probably should update these higher spec devices and in the future I likely will. Subsequent supplimental updates to iOS 6 have seemed to have resolved some of the issues, but the overall feel of the UI is still sluggish and irratic on the iPod Touch. I can only assume that it is due to the hardware limitations of the device; hard resets, fresh installations and wide scale app deletion/reinstallation do not yield noticible results and I'm only using half of the device's 32 Gbs of flash storage. This is just my personal experience; I've read forum posts where users report being satisfied with iOS6 on devices older than mine - an iPhone 3GS for example. Thee's an element of subjectivity involved - the perceivable hit in performance iOS6 took on the device may have to do with a variable unique to my iPod Touch - something my personal devise was exposed to since its been in my posession. Furthermore, one user's idea of "good" performance can be another user's idea of "questionable" or even "poor" performance. I'm sure for every person who'se had an experience like mine with iOS 6 on an A4 based device like a 4th gen. iPod Touch or iPhone 4, there will be a person who is perfectly pleased with the exact same setup. Right now, I'm using the iPod Touch as a guinnea pig. When iOS 6 seems to perk up on this device, I'll update the others; however, I'm begining to think that iOS 7 may arrive before everything "feels" right. As I said, the issues may be indigenous to my particular iPod Touch. And Again, this is just my personal experience; I don't mean to frighten you away from iOS 6 completely. Hunt around the forums and read the most recent posts about the device you plan on updating. And keep in mind that a lot of folks don't use forums unless they run into issues; you don't get to hear from all of the people who are completely satisfied with thier experience. Hopefully, more users will respond and share thier experiences so you'll have a better idea what to expect if you do decide to update.