Best ECL83 for HD83 ?

[KennyK]

what, in your opinion would be the best ECL83 in the Headphone Amp?

the old description on the old WAD site said that mullard were supplied because they were the best. I got Philips with mine, and the ones in the picture in the shop section here look identical to mine. so I'm assuming that philips were latterly supplied by WAD.

I was looking on watford's site and they have two different ones listed - the Mullard and the Amperex. both are the same price. the Amperex description claims "These were the most popular upgrade valve for the world audio design ECL83 kit amp. We sold out of these many years ago, or so i thought and these come to light at a recent stock check"

so should I buy a pair? or should I buy the mullards? or should I stick with the philips?