I have an hx4705 with Windows Mobile 2003SE.

I am thinking of upgrading to WM5 mainly because of persistent memory feature.

But the questions are:

1) Despite some complains of slowliness on WM5, is it worth to upgrade?

2) After upgrading, will it be possible to go back to WM2003?

3) Are the following software full compatible with WM5?

a) spb pocketplus 3
b) spb gprsmonitor 2
c) splashid 3
d) pocket12CV160
e) betaplayer
d) skype 2

Thanks,

Regards.