I really don't care about sound quality on external speakers, I find it annoying to listen to music even on laptop speakers, let alone a phone's (except if it has a magic tech that makes it sound like a hifi), but I care very much about the loudness, as I don't want to miss calls (or worse alarm clocks).

OT, even as I never use them for listening anything, for the sake of conversation, the 5800 has probably the best quality loudspeakers. It makes the N900 sound ridiculous.