anyone know the best tubes for pv10al.......

i currently have RCA's and the sound is bigger,more detail and dynamic, but ive lost the focus and soundstage that i love with the original tubes. which were some unknow german brand. i quess this is tube rolling time for me. any experiences with the mullards, tungsol, telefunkens, amperex or any other tube youve had succuss with would be greatly appreciated. im looking for image, soundstage, focus, long life, gain, detail, and headroom extension. i dont want a rolled off sounding dark tube. please let know, thank you for your help in advance.