How much better is it than the Note 3?
How good is the battery life and call quality?
I know it has good performance, but I have heard it can lag... is this true?
Last, but not least, is it worth getting now, or should I just wait for the next Android flagship device? (rumors say the LG G5 will be released late fall early winter)
It is significantly better than the Note 3. I had the Note 3 for about a year, then I too started experiencing dropped calls and signal so bad I couldn't even send text messages. I sold it and swore I'd never get another Samsung phone because of the problems I had. So I went with the LG G3, which I really enjoyed, that is until I saw the Note 5. The design and build quality is gorgeous. The phone just really feels great in your hand. I always thought removable battery and storage were important to me, until I realized I've never once swapped out a battery (and let's be honest, you probably haven't either) and between my 32GB G3 and 32GB SD card I had plenty of space left even with a couple thousand pictures and videos and about a thousand songs. Went with the 64GB Note 5, which is plenty big enough for probably 98% of customers. The software improvements are pretty substantial compared to the Note 3 as well. The SPen features are great and the new version of touchwiz with the addition of themes provide a much better user experience than the Note 3.
Battery life has been solid for me, easily getting me through a day with about 30% battery left. I typically average about 4 hours of screen on time, am on WiFi at home and my office, have a good signal everywhere. Call quality is great, I haven't dropped a call or had any other problems.
Performance is great, the thing is incredibly fast and handles everything I throw at it without a hitch. I haven't noticed any lag whatsoever.
It is definitely worth getting now, it is still very early in its life cycle. If you want to stay with the Note you're going to need to wait 9-10 months for the Note 6, so based on that it seems like a great time to get the Note 5. As for the competitors, I'm sure you ahead know, obviously none of them have the Spen. I think this is probably it for major phone releases until the spring. The LG G5 probably won't be seen until the summer as that would be consistent with the G3 and G4 launch, not to mention they just dropped the V10.
At this point, the Note 5 is probably the best phone you can buy. It's got the best screen and camera on the market, the unrivaled features of the Spen, and it just looks better than anything else out there right now.