i am tired here waiting for sedio slim extended battery..
After read good review from HTC HD2 forum here:
Momax battery ~~~! - xda-developers
..then i decided to buy momax X-Level Battery
Momax eShop - Mobile Phone X-Level Battery for Motorola Milestone
Price is about : $26 including tax and ship to worlwide
the capacity is stated as below the standard droid/milestone battery (momax battery is only have 1250 MaH)..but they stated and xda people said it 20 to 30 % better than standard battery..
will review here after received the battery