Okay so after reading a bunch of reviews and being on the fence about this phone, I bit the bullet and upgraded (I used to have a Lumia 1020 but the battery life was frustrating to me). My wife and I are both using the 830 and it is the best Windows Phone I have ever used (having owned 5 devices and tried probably 3 or 4 more). The battery life is amazing, the LTE speeds are great, the processor is more than fast enough (it feels tons faster than my 1020 even though benchmarks dont show a huge difference) and the build quality is top notch. Everyone keeps commenting on how nice it looks and feels, and having the SD upgrade is well worth it! Not to mention fitting a 5" screen in the same width as the 920/1020 with a much thinner body makes it seem like a huge upgrade. I couldn't be more happy!
L1020 -> 3G, email 15 minutes, most apps not updating or running in background = doesn't make it from 6AM-6PM
L830 -> LTE, all email push, tons more apps running in the background, pedometer on = makes it from 6AM-12AM with about 30% remaining on similar usage
None of this is scientific, but I thought I would offer my 2 cents for those who are on the fence!
L1020 -> 3G, email 15 minutes, most apps not updating or running in background = doesn't make it from 6AM-6PM
L830 -> LTE, all email push, tons more apps running in the background, pedometer on = makes it from 6AM-12AM with about 30% remaining on similar usage
None of this is scientific, but I thought I would offer my 2 cents for those who are on the fence!