I opt for plastic ones. The reason…the convenience they provide.
In order to have real ones in your enclosure you’ll need a bio-active substrate. And while there are many keepers out there successfully using a bio-active substrate, that’s just not something I’m really interested in.
I would recommend the book “The Art of Keeping Snakes” by Philippe De Vosjoli. It is an excellent book on this subject.
Regards,
Steve