Hey dude, I didn't see any poll here. Anyway, my vote goes to MS 2007. I like its feature and I think it's cool!
I love Office 2007. At first I don't like the interface, but now I already familiar with it. - Dynashox -
2003 is tried and true - I've really loved working with it and would prefer it over any other suite out there thusfar. HOWEVER... I've recently dl'ed the beta version of 2010 and it's not bad. So far so good at least. The ribbon is a little bit of a brain-F#*@ for a while but it gets easier with time. It's a more visually appealing suite and it offers a few new treats like new wordart. Disappointments for me were lack of ease in saving a PowerPoint presentation as a web file.
I am more comfortable with Office 2003 than its 2007 version. Though the latter looks a bit complicated, I have it installed in my office PC...
Since i mostly did my work and learnt office on MS Office-2003, i like it much...but from time i have started using MS Office-2007, it is really good.....in my opinion. Have a nice and colorful day.