Hi, yes, I've had multi-probe (32) galvanic. That means the operator can zap 32 follicles at once. It's been good for me. Yes, it can be a slow (and expensive) process but you usually only need one pass...the probe pretty much kills the follicle dead first time. I'd agree with Dena, it is the skill of the operator that counts most - you not only want someone who has done it for years, but regularly and on beards for trans women. Also, it hurts regardless. You will get some swelling and spotting for a day or so afterwards. You won't be able to shave for a day or two before and it is recommended not to shave directly afterwards (to avoid scarring).
If you have a dark haired beard but fair skin you might want to consider laser first as that can help to reduce the electro you might need.