I also don't want to use Falcon Engine. I use WP Super Cache which I'm happy with. I have no experience with Falcon Engine and don't want to spend the time to look into it. In the two minutes I did spend to search for Falcon Engine v WP Super Cache, I found the following:
I am using the paid version of Wordfence and have been afraid to update since the version introducing Falcon Engine. If I understand correctly, Falcon Engine is turned on by default but it seems that the IP blocking feature to block foreign IP addresses won't work if it's turned off. That's the only reason I am paying for Wordfence.
Please let me know if this is correct. If it is, I will have to cancel my account.