Whats next? (Phone-ically speaking)

With the success and positive feedback we are seeing with BlackBerry SMS support, we wanted to take a poll on what phone operating system we should tackle next. Is the iphone the biggest hurdle? Is Windows Mobile the dominant player? Could Symbian be the way to go with the European market booming? Or is there an OS we aren't mentioning that should be pushed to the front of the line? Email your thoughts and opinions to contact@dexrex.com. We take user feedback very seriously, so let your voice be heard!