Motorola i830 / i833 / i835 / i836
i830, i730, i710, i530
The reason I am asking is that a family member has an i90 whose loudspeaker sounds much fuller and more natural than my i530, which in comparison, sounds shrill & tinny and distorts at high volumes. Sometimes it sounds OK (like when I'm using the earpiece), but I find it substantially easier to converse through the i90.
I am considering upgrading to another "new" model in hopes of better performance, but I don't know if I should just go backwards and try out an i90 until something really stellar comes out.