I disagree with everyone else. I have a business called Temple Guitars. Click the link if you want to see what I do using just Easel and an X Carve. The X Carve has completely changed the game for me, giving me accuracy and repeatability for a reasonable price. I do think I had more teething issues than most, but customer service have been tireless in their commitment to getting me on track.
I actually have Fusion360, but I don’t use it, as at some point in your luthiery CNC journey you have to ask yourself how much you want the CNC to do. Milling takes a lot of time, and with some operations it’s just faster to do it by hand. For example, you may only cut 10mm of your cavities, then hand rout the rest with a bearing bit. Saves so much time. Similarly with outlines- cut 10mm, take it off the machine, bandsaw it out and blast it into shape on the router table. Neck carving on the X Carve takes forever, so I just cut the outline, truss, and carbon fiber neck rod channels on X Carve, then take it off and shape them with Shinto rasps and Iwasaki files. I can shape a neck a lot quicker than my machine can, and I enjoy doing it. But it’s really up to you.
Using Easel, this is what I do- I break different operations (say, on a body), into different workpieces on the same file. That way, if Easel decides to have a meltdown (it happens), instead of having to get it to do everything up to that point again, you can just start at the beginning of the last operation. I cut all outlines 100% in Easel, all cavities (including chambering for hollow/semi hollow bodies), binding channels, neck pockets, and under-cap wiring channels. I drill out smaller wiring channels and output jack cavities. Then I use templates/jigs and either bandsaw, router, or hand rasp/file for arm and belly carves. If I’m prototyping a new instrument, I do the ‘cut 10mm and blast the rest out by hand’ method I mentioned earlier. I also do round overs by hand, as I made a router jig like the Stew Mac one. I can rout a binding channel in under a minute.
Here are some pics of X Carve results with just Easel, I hope you find them inspirational, because I believe Easel is an insanely powerful tool, if you can think laterally you can side step a lot of the issues that make people think it’s not a good option. As far as Pro is concerned, you get two free Pro days a month, so there’s no need to get it unless while using it for free, you decide you can’t live without it. I don’t need it, but you might, so just have a go and see what you think.
I hope that helps, and I’m looking forward to seeing what you come up with!