well K3000i is yet 2 be planned to be launched by SE...sry
main disadvantage u hv wit k300i is that just 12mb memory space without expansion is not gud enuf for a video recording camera fone....ya but u can play clips on that....wat i do is snap pics n videos frm fone n transfer it to my pc (irda or cable) so kinda not havin much memory problem..twill cost u round 6k n cant get anything better at that price....its got tons of features (mp3, media player, irda, unlimited video rec, nice cam, irda etc)...so can go for if thats ur budget
cheers