You’re better off saving it for a conditioner, because it’s usually the last step and it stays on the hair a bit longer.
Now, the question is: do you want something cheap, or do you care more for the scent and staying power? If you want something cheap, you should find a FO… but if you want the scent and staying power, you should go with an EO.
However, EOs will be trickier to use.
In general, spice and wood notes linger longer than citrus and floral notes.