I have both co.uk and dot coms for the main ones but I've brought a couple of co.uks recently which I'm 50/50 on but the dot coms are available and I'm tempted to purchase but...
I need to know the money will be made to make it worth my while, I know it will as its a massive market but my hosting is based in Germany so the dot coms dont make me money like the co.uks do.
They wouldnt be a brand name like I have now but it does what it says on the tin but I hate sitting on domains and not seeing them earn.
I know at the moment with some of the scripts I have brought, I can whack up sites within a few minutes and make money from them but its more the killer domain you want.
Someone here has the dot com of van insurance, and someone has the co.uk version of it but......
http://www.google.co.uk/search?hl=en&q=van+insurance&meta=
if you look at the search results, the co.uk is top 10 the dot com version is nowhere really.
So I'm always humming and arghing about dot coms unless they are a Worldwide marketable force.