emmmm...i'm not an expert on it but all i can say is it's depend on ur need.PDA phone r almost like a mini-tiny-laptop,where u store important info/data/works without need to bring a laptop & can be easy avalible...mostly usefull those who r working.As for 3G,it mostly cover info-tainment like live news,stock,tv,live tele-comfrencing,multimedia,games,ringtones,sending pic msg etc etc.1 thing i can say is PDA phone hav some advantage over 3G phone is because some or most PDA phone hav 3G support compare to normal 3G phone if i'm not mistaken.Only the price will be the turn-off.oh ya,for 3G it is also depend if the telco hav any 3G service.So far i only know Celcom hav 3G service,Maxis not to sure & Digi on the way applying for it.As for camera,it depend on u for what u wanna take pics of.This is just my opinion

ps:if any1 hav notice a trend now that some ppl like to showoff their phone like "look i hav a 3G phone" which unfortunately not avalible yet in my state or "look i hav a new latest tech PDA phone" which sooo sadly i notice that they don't hav a clue how to use it.