XXX-XXX.com or XXXXXX.net?

I'm trying to register a two word domain name and the .com is taken. but not the wordone-wordtwo.com or the wordonewordtwo.net.

So I was wondering... which should I register? I was kinda leaning towards the .net because when I get enough money I can always buy the name from the person who owns it.

What do you think?