No regrets here. Really enjoying the 822 and I know I made the right choice. It has the best blend for me of what I want in a phone from software to hardware, which includes the Nokia collection and support. I honestly only get more pleased with the phone, I had good battery life for the first couple of weeks of owning the phone, but have moved up to the excellent battery life category in the last week and that's just a cherry on top at this point. The camera is working out great for me, I've been impressed with the quality, though there is a bit of a learning curve to figure out how to get the best pic at times. My favorite photo subject is my niece, so I don't post many pics on here, but the camera is great and although not the 920, I've also been impressed with what it can take in low light situations. I think the audio on the phone is great, I hook it up in my car several times a week and it has great sound. I'm guessing sound depends on the person and for my usage, the car as well. I think my car has a good regular sound system to start with, I'm sure that helps, and I'm not a sound snob, but have a good ear for music and sound (played an instrument for 10 years) and I have no complaints on the sound quality playing music.
Also, I'm a lot happier than I thought I would be with option for expandable storage. I thought it was a good thing before, but now I'm feeling it is essential because 16 GB doesn't feel like it's a whole heck of a lot the more I use the phone. I do think I'd be a bit nervous at this point if I was limited to 16GB, now this is on me somewhat because I have 4 states' maps downloaded on my phone and I try out new apps all the time, but beyond that I barely have any media loaded on my phone beyond a handful of books and a few dozen pictures and I'm already down to 8 GB of storage. Would make me very nervous to think less than one month in and this was it for the next 2 years. I was thinking that 16GB was workable and I think it probably is, but it's clearly much more so if you have unlimited data and can make use of cloud storage without worries of what that will mean to your data usage, I don't have that luxury.