N1 and desire is more or less the same phone. Both can be rooted. Buy desire if u prefer the sis 2 yr local warranty. Buy the n1 if u prefer to be otherwise.

Speaker of both units r not as good as nokia/samsung/sony handphones, but good enuf for teleconversations. Battery won't last as long as these phones too, but if u switch off yr H or 3G and on them only when required the desire/n1 battery can last a full day+ with reasonable intensive use. No problem with wifi, bluetooth, gps. Very nice screen, roburst UI. If u want the best screen for the moment, then it will be the galaxy s.