Just got myself a L830 to replace my L1020.
So far am satisfied with the battery life, able to last for 15 hours of normal usage.
Camera is decent in most conditions, but does not perform well in situations where they are many lights (example Christmas tree lights in a busy street). Camera launch speed is faster than L1020 so as the shot-to-shot duration.
The microSD slot makes up for the 16gb onboard storage, no complain.
Not a heavy gamer, so far no noticeable lag while launching apps.
The phone looks and feel premium, I have friends who commented how good it is to hold and the green colour is an attention seeker.
I'm fine with LCD screen, though it seems a bit washed-out compared to OLED it does not suffer from screen burn-in.

Have you tried eBay? I bought one ultra slim TPU silicone back cover for 20bucks. Not a fan of flip cover cos I find it flimsy while taking pictures.