Hi !!! Here in the US, the usual laser of choice at this time, is the Pulse Dye. There are Docs who still swear by the YAG. I know that people have had results with the Yag. It totally depends on your pws.
Scabbing is not exactly what you would want to see. I am not saying that it does not happen, because it does. I have heard of many people that get a scab with every treatment. The possible issue with a scab, is where you scab, you can scar.Not always , of course but it is a possibilty. Most people that have mentioned scarring after a laser tx, have the scar where they had a scab. It is a risk. Scarring can happen with any laser. Scabs can happen with any laser. It is just a risk every time you have a tx. You are at a risk for scarring, hypo-or hperpigmentation.
I would definately mention the scab to the Doctor when you go back. He may want to adjust the settings etc.
Most people with the current laser technology, can have fading of the pws but 100 percent eradication is not the norm. You can never tell though..
Some people have great results with a pdl laser, some have no results with a pdl but switch to a pdl for example, and they see results. Some adults even switch back and forth with different lasers. Some docs with use different lasers on different parts of your pws. It depends on the doc and what they feel is best for you.
Hank has had treatments with different lasers and I am sure that he can share some personal experiences with you.
You may have noticed this already with your research, but everyone tends to respond differently to tx, and almost everyone has their own opinion. That can be helpful to you -by asking questions, and talking to others, and getting all different opinions. Knowledge is power and it can help you make decisions for yourself...