Good questions … posited to the wrong audience.
Suggestions: Consult with both (actual) laser operators and (in the flesh) electrolysis operators and ask these folks your questions. Skills, settings, machines used, etc.? There are simply too many variables for any of us to give you an answer specific enough to make a decision. I can tell you ONLY what I can do, I cannot tell you what anyone else can do.
I suppose that you have kicked off the predictable responses from the laser-tolls and the electrology-trolls (of which I am one). You know: which laser is best, which electrolysis unit (method), “it worked great on me,” it did “horrible things” to so-and-so, blah blah blah. It’s somewhat worthless information because the ONLY thing that matters is the person who is doing the work on you … not anybody else’s experiences or opinions.
Ask the person who will be doing the work!
The practitioner that is MOST SPECIFIC as to the treatment outcome (and cost and time), would be my first choice. If you decide on laser, DO NOT sign one of those “if it doesn’t work on me, that’s just too bad” contracts, WTF(?). If you consult with an electrologist don’t buy the “this will take about a year” BS. What you want is HOURS of treatment not “elapsed time!”
Let all parties know that you expect specific results within the timeframe they specify. Never pay thousands of dollars “up front” to any practitioner: you are just asking to be cheated!
(BTW I was never very good at “hanging 10,” even on my “9’6” Yater Spoon!” I managed a few times, but generally went “over the falls!” But it was fun anyway! “Wipe-outs” can be entertaining! And, I did a lot of them.)