All this comes to mind because I was watching Ashley Fires in a "Mommy Blows Best" scene this morning.
Interesting that you mention her name. I agree with you that she is very talented but I also think any type of BJ from her would be extremely pleasurable because of her sky high sex appeal. Ashley is a gorgeous woman IMO, someone who I would rate a 10/10.
My point is that when considering blowjob techniques, we should also ask ourselves "How attracted are we to the person giving us the blowjob?" I think that's critical and goes hand in hand with the blowjob techniques. Someone who is skilled at giving blowjobs will make you feel good but if you have a strong physical attraction to that person, then that blowjob will just feel 10X better! Especially when you're looking down and watching that beautiful lady do her thing.
On the other hand, even a BJ expert can't make you have a good time if you're not attracted to that person. For example, I'm sure there are a lot of gay men out there who can suck a mean cock but I don't want them anywhere near my cock!
I think that's why blueeyedginger is so sought after for her blowjobs. Not only is she very skilled as she demonstrated in this thread but she also has a very attractive feminine face.