yeah the EML its a nice sounding tube, warm yet balanced and with good imaging, but i personally think there are many NOS tubes that outperform it, no comparison vs WE422A, the WE422A is more transparent and has more detail and clarity to it. some of the other rectifiers i have i would prefer to the EML as well.
i did use the EML in the WA22 quite a bit because it didn't cause noise with some of the 6f8g's i used. i preferred the EML 274B on the WA22 over the 5U4G.
+1, in the WA22 i still preferred the 5998 over the 7236 tubes.