To give baby a dummy - yes or no?

[Bubbles021]

We have a beautiful 7 week old baby girl. She is the first baby that we have brought home (her brother sadly passed away last year when I was 30 weeks pregnant), so we are very new to parenting and probably overthink everything because of our experience with our son.
We have made it to 7 weeks without giving our daughter a dummy. We are not against them (my husband had one as a child), it just hasn't felt necessary.
She has recently started sucking her thumb as a comfort method. This has made us question whether a dummy would be better rather than leaving her to suck her thumb. Neither of us really know much about the pros/cons of dummies, so before we jump into the decision we'd really like to hear other people's experiences and opinions. Family members have suggested she needs one, but we want to make an informed decision.
Also, are there any specific brands that are known to be good? We really do know nothing about them, so any and all information is much welcomed! Thank you!

I couldn't breastfeed so gave my son a dummy for comfort. He's now nearly two and we're preparing him to give it up.

I am autistic and was a thumb sucker until I was about eight or ten I think. My teeth are fine (I only needed a retainer for a year to straighten them) but my thumb joint is so loose that I can pop it in and out of the socket. For that reason alone I'd always choose dummy over thumb for my children.