Not sure what size you're looking at, but I'm going to assume marking/engraving vs industrial parts cutting.
I spent a fair amount of time running an Epilog 30w fiber laser. Great for surface markings on bare metal, and colored nylon. Not capable of cutting at that wattage. Also not as good as a CO2 laser for soft material cutting and engraving, or marking on anodizing. The Epilog's are nice packages, but expensive compared to some of the other units that are available now. Software was fairly easy to work with for doing "art" but wasn't ideal for parts production. We also ran an Epilog CO2 for plastic cutting and it was always a little bit of a struggle to import parts from CAD into what is effectively a "Paint" program and get the dimensions dialed in where we needed them.
If you want to be able to cut wood, leather, cardstock, etc. as well as engrave and mark metal you might want to look into buying either a combo machine, or two separate units if you have the space and workload to justify it.