>>936463923 (OP)The mom has bigger tits and clearly is the bigger whore if she's already doing OF, which both go in her favor.
The daughter is prettier and younger, which are the things she has going for her.
Based only on this limited information, I'd go with the mom. The fact that she's the bigger whore means she'll probably swallow and take it in the ass without needing any convincing.
That said, if the daughter will do raw but mom won't, then daughter it is.