dude take my advice and go for a Nokia 6630,, i used both 6630 and w550,, 6630 is far better than w550 in almost all ways,,
first off u cant zoom in w550 when u want to take pics u can only zoom in video mode,,, where as 6630 u have smooth 6x digital zoom in both pic mode and video mode,,, 6630 can take 1 hr long vids,,, and it has expandiple memory,,,let me list out a few things i use my 6630 for
*A webcam(mobilo cam)
*Movie player(Smart movie,, can watch full lenght movies if u have a 256mb card u can have upto 2 full movies on it)
*Can control my whole PC with in bluetooth range(its like having a small keyboard and mouse with u i can change songs in my winamp playlist and dont have to keep running to my keyboard to fast forward aor rewind movies i can sit on my bed and do every thing,, its the coolest software ){Control freak2}
*Browse the net(with EDGE i get speeds around 160kbps download and 115kbps upload)
*Music Player(can play almost all kinds of file i.e .wma .mp3 .mp4 .m4a .rm .ogg .aac){wmaplus! player}
and much much more stuff can be done,, infinte possiblities
the only cons i can think of is that it dosent have a flash for it camera but its night mode does a pretty good job and the default ear phones are not that great try and get a 6680/81 ear phones they have better sound quality and the loaud speaker may not be as good as a w550 i.e if want to listen to ur mp3 but does a pretty decent job
if ur worried about where to get the softwares do a quick google search or just PM me and i will let u know ;-P