after owning both a n800 and a n810 i have learnt the following

for good day to day use and long battery life

1.no desktop applets

2.no status bar applets-use whats their

3 minimum .number of apps no browsers---tear midori or arora

4.no extra devel

5 leave unit on all the time

6,for music use media player--no canola kagu etc...youamp the best if you must

7. feedcircuit for rss

8.streamtuner and streamripper work for free music download

9.agps and minigps for n810

thats it --keep it simple

the rest is not worth the bother