i hv JJ & Philips Miniwatt (metal base) 5AR4 rectifier tubes. NOS Philips Miniwatts are very expansive, but betters the JJs in every respect. JJs are however pretty decent & excellent in terms of value for money. some Mullards are also reputed to be excellent. i've not heard the others you've mentioned.
btw, rolling the rectifier tubes makes an even bigger diff. than output tubes in my amp (Kondo Ongaku).
btw, rolling the rectifier tubes makes an even bigger diff. than output tubes in my amp (Kondo Ongaku).