I really liked the Mullard CV2493 in my 17LS. But, I am only comparing it to the stock Sovtek 6922. In my area, availability of NOS tubes is somewhat limited. I found that the Mullard threw a much larger sound stage, particularly from front to back. I did not notice any difference side to side, but that may be room limitations. Also, compared to the Sovteks, the Mullard are a good bit airier.
Someone suggested this first - get really used to the sound of the Sovteks, to give yourself a reference point. Then, when you try different tubes, you can compare to the stock tubes.
Someone suggested this first - get really used to the sound of the Sovteks, to give yourself a reference point. Then, when you try different tubes, you can compare to the stock tubes.