Ill try to get a few N800 speakers to test with, but the one i linked to according to datasheet is much better in both SPL and Watt's, normal phone speakers are under 1W and this is 1.5W with higher SPL at 1W, but will test quite a few just like the battery's, the best sound possible in the "smallest" space, the space dedicated to sound so far is many times bigger then N900

Sound wise yes front facing is better, but then screen has to be slided up and your hands not in the way, so im still considering side blasting, or maybe an internal fillet that directs sound to the front, this way it can be in a different shape then speaker, when i get more time ill start drawing up a prototype