How much HD space does programs take?

[66217]

Does OS X, iLife, iWork take a lot of HD space?
I hope buying the new MB next month, but I am not sure if 60gb are enough. I really don't have a lot of music or videos, maybe 10gb, and maybe like 2gb of documents and things like that. Plus some games.

I've read that it is recommended to always have free space for the computer to work faster. Is this true? Or is it an old myth that only applies for older computers?
I really don't want to be regretting later the 20gb of extra space I could have added if I purchased online.

I want to buy at the store because I am from Mexico, and even do I have a condominium in the US, I'm paranoic of the MB shipping late and not arriving while I am there.

Thanks in advance

 

[SuperSnake2012]

From the pics I've seen online, it's using something like 15GB. I need to BTO mine and add the 80GB HD.

 

[Vader]

Well, if you ever need more space, I read that the HD will be user replaceable. So you could get a bigger HD later, and get the cheaper MB now.