Everyone knows that Rosta-Frei is the best
I like to blast some reggae when I use it too, Sean Paul or Shaggy are my fav.
When that steel isn't available I don't really care.
I have a lot of 8CR and Aus8 and 8CR seems to be a touch better than Aus8 but they're both great EDC/beater steels, touch up super quick and take a pretty keen edge
I really enjoy S30V for "long term" use steel. If I'm going to be using my knife a lot, breaking down a good amount of boxes for example. It takes a super keep edge and when it looses that it takes on a toothy edge that doesn't lose any of that sharpness and it keeps that for ever in my uses. I only end up sharpening my Para 2 or ritter grip after I ding up or chip the edge.
Victorinox's steel is also great, I can't get as a sharp edge as I can with other steels but it seems to stay sharp as long or better as Aus8 or equivilant and is very easy to sharpen.
I'm also working up an opinion on S35VN I like it a lot so far, I have yet to even touch up my UTX-70 factory edge after exclusively using 2 months of EDC and still going.
The same with D2, I don't use my Brous Silent Soldier too much though, I want to get a bone collector BM with D2 though.