ok here are some honest answers, ive been known to be pretty ubiased so some members might not like my answers
DVD burning
Macs are pretty damned good with this, there are very few PC answers to dvd burning that work well from what ive heard...
work with digital pictures (graphic design)
easy answer "everyone does graphic design on macs"...
most print houses work on macs, but with newer programs these days (besides quark) it doesnt matter if you use a pc or a mac, in most cases.. so in this case, a pc might be better because of faster hardware available for cheaper
editing Website
fact of the matter is, 95% of internet users (rough estimate
) use PC's, also flash is a big hitter too, so basically you build websites for pc users most of the time, which means that if you are on a mac, you need a pc to see what it looks like....
also flash performance, for whatever reason, is horrid on a mac... no clue why
working with movies
although pc hardware is faster, mac software in this instance over powers it... final cut pro is a great program that the pc side lacks and you really cant leave home without it
Internet/eMails
fastest net browsing is still on pc sadly, as well as being compatible with just about every plugin etc... so mac users miss out on a lot of new creative ideas
other than that, it doesnt matter which platform you use to browse on etc
(games)
if anyone ever told you that a mac would be good or better for games, they lied to you... absolutely no game development for macs, all we get are ports of pc games sadly
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so it basically comes down to speed of hardware vs software and community really
i like to have both myself, but i had to sell my pc in the move, so i have just 2 macs left now... if you need bang for the buck, i say go pc right now, and come back to mac later on