Most sites offering key generators are fronts for malware. Because these programs need to modify how software communicates with a server, they often require you to disable your antivirus. Once you do that, you are wide open to: Stealing your passwords and banking info.

DSP license versions to see which one fits your specific laser model?

There is no such thing as a "better" LightBurn key generator. The "better" option is a stable, secure, and supported piece of software that ensures your laser runs safely and your designs come out perfectly every time.