Need a new cellphone /want mp3 player and navigation computer

[BUD]

Its time for me to get a new cell phone, and I want a an ipod and would love a navigation system for traveling. You guys seem to be informed on the latest tech stuff, so I am wondering if i should buy one unit that does it all or two or three. I have a hard time imagining that one cell phone can do all of this effectively. Also are there monthly charges for the navigation on the cell phone? Any of your shared experience on any combination of these phones/ devices is greatly apreciated.
thanx
bud

[guids]

Im very happy with my current setup.

Sprint A900 cell phone, plays mp3s, can connect to my FM transmitter and can listen to songs over my car radio.

Dell Axim 51v, with GPS, cna use the cell phone as a bluetooth modem (high speed EVDO), and can get on the internet like a normal PC. Memory cards etc, can hold MP3s, also conneects to my car transmitter.

[Nicholasp27]

umpc

7" touchscreen
windows xp professional
can do skype voip if u get wireless internet card
gps
bluetooth
all music formats
all video formats
etc