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What's better .NET or a hyphenated .COM domain

I know this is simple but in selecting a domain for my current project and I only have two options.

firstname-lastname.COM or 
firstnamelastname.NET

I'm leaning to the .COM as after reading the how to choose a domain name post.

http://www.seomoz.org/blog/how-to-choose-the-right-domain-name

Thanks