Short or Long domain contain keywords for SEO?

Hello,
I very confused about pick which type of domain.
Example:
My target keywords: sell phone, apple sell phone, samsung sell phone
Option 1: mainphone(.)cnom
-> Will have same category domain like
mainphone(.)cnom/applesellphone
mainphone(.)cnom/samsungsellphone

Option 2: goodsellphone(.)cnom
-> Will have same category domain like
goodsellphone(.)cnom/samsung
goodsellphone(.)cnom/apple

Which option is better for SEO, option 1 is shorter but option 2 contain direct keywords.

What do you guys think ?

Exact match domains and partial match domains do not benefit you as much as they once did. If you want to use them anyway, I would select option 2.