Het for what? Pastel het clown is one I would want to get right now if I could but since I already have het clowns I would probably opt for an older het female.
It depends on het for what and wether you have a male for that female. For me anyway.
While I have decided not to purchase any snakes until I have paid off my credit card bill (this is why I have so many snakes in the first place) I would vote to get a het female this year as I have a pastel. In the future I could produce homozygous animals and pair them with my pastel to make my own hets.
Het female now. You lose a year just for the Pastel gene... Which you could just buy a male with the Pastel gene in it instead. Heck, for the price, get TWO het girls this year.