Domain name: with or without dash?

[Platypus]

I'm considering a new domain name consisting of two words, and wondering if it's better to insert a dash or not.

When registering the actual name, I'll register both domains obviously, having one redirect to the other.

But what would be best to use as 'main' domain?

[edited by: Webwork at 1:27 pm (utc) on Dec 30, 2010]
[edit reason] Hyphenated domains is a concept that doesn't require examples, fictional or not [/edit]

[ankurgel]

the domain without the dash is always better. Unless you have pretty famous and stable brand, going with a domain with a dash (-) in it is "No NO" in my opinion. Other reason for not going with a dash is that it becomes easy to pass to some arbitrary person or makes it easier to type in a flow without giving a brief pause for putting - .