I have a CO2 and a Fiber laser, usage depends on material I want to cut/engrave.
CO2 for anything organic and some plastics. Fiber for Metals and marking Certain plastics (like abs).
with unlimited budget you could do almost any job, but in case you need to process metals be aware that the surface area / power ratio can quickly go over budget.
my 50W Fiber Laser has a working area of 90x90mm /150x150mm depending on Lens installed and you certainly want to use the smallest lens suitable for the job for the best yield.
CO2 Lasers have a lot larger working area / cost due to their construction principle. So I´d first formalize what Laser jobs you will actually encounter and look up if a suitable machine is within your budget. a Fiber laser that could engrave large work pieces or even cut metal can very easily get very expensive.
If you can’t keep the machine occupied all the time outsourcing might be a better option.
I have reached my cutoff, anything I can´t process with my two machines will be outsourced.