The best bid is to purchase both non-hyphenated and hyphenated domain anmes (if possible). Otherwiseyou amy think of either living with it or pick antohr name. Sometimes, although not common, when a visitor recall "goodact.com", it may happen to type hyphenated ones, ie good-act.com (It will become more common when hyphenated URLs are prevailing).
And do you think they will prevail? Just today I was trying to remember the url of big boards, and first I tried: bigboards.com ; then I tried bigboard.com ; and only then I tried big-boards.com , which was the right one.
Not sure at least I know someone do the reverse. Anyway nothing is absolute. Different people vary although the chance is not equally distributed. Probably it may not prevail, but I'm pretty sure to say hyphenated names will become more common than that of in the past. Some companys like no-ip use hyphenated names too.
I buy the Hyphenated .com over the .net every time for many of the same reasons mentioned here. It does help with your serp and it will also give you a slight advantage to help you pull the right adsense keywords when you start a new website. I also like how it makes it easier for people to read and more than likely they are find your site from a link not type in so it really doesn't matter how long it is any more.