If you were to start a tube today would it be best to start with..
 

A brand new domain or an aged one with some backlinks..providing the aged domain doesn't have any spammy backlinks.

If you have a domain that fits a tube site that is aged, it would seem to be better than starting from scratch with a new one. That's what I would use.

I would not, as there are many for sale here. I guess we all know why :2 cents:

Always go with the aged if no spammy backlinks as you say.

Have luck! :)

Aged domain for sure