This is a fairly commonly asked question. The major things to look out for are to be aware that your laser is a 12V system and that an increase in laser module power may require an upgrade to your power supply current rating.
As far as specific laser modules take a look at this post:
I’ve heard that both xTool and Atomstack are soon to release quad-diode lasers so that may be something you want consider as well. Looks like the Atomstack requires 24V so you’ll likely need to supply power separately. I’m not aware of the xTool module’s requirements.