My two cents after having a month of hard germinating recently:
make sure your temps are consistent and above 70 (minimum).. Try for more like 75 - 84 F.
The method doesn't really seem to matter as long as the temperature stays consistent (assuming the seeds aren't already dead and the seeds are getting moisture and at least some oxygen. It's debatable whether dark/light has any effect [seen both sides argued] but they definitely need light after they germinate - I like to play on the safe side and keep them dark and personally use the wet paper towel in a plastic bag method) until they are moved to soil.
I had at least a half dozen just-fine looking seeds that did not germinate at all this round and I think it was because the temps were dropping at night (not even below 70 necessarily, but fluctuating nonetheless) .
I started another batch of 4 seeds (from the same batch) and left the plastic bag inside a leather pouch (to keep the light off of them) and set them right in the soil in my grow room 78 degree F). All 4 sprouted within 3 days.
I was getting to the point of panicking because of how long it was taking to get 6 seedlings going but after a lot of trial and error (trying everything from water soaking, to sandpaper, to physically cutting the seeds, consistent temps took the win in the end.
This is the first time I've ever germinated seeds in the winter time so I've always had consistent summer temps inside my house in the past and never had problems.