Is the Manley Steelhead still relevant?

ebm, it better be as it is way more expensive. I do like that it has a balanced input. I do not like that is has 2 12AX7s in it. All the phono amps that I have listened to that have 12 AX7s have been colored. I know the Steelhead is not. I have not heard the TW. 

Yes, the Manley Steelhead is still relevant. I don´t see how you could do better for the money.
A caveat: I believe that the earlier model had QC problems, but these seem to have been overcome.

Ask member Lewm.

I've owned mine for five years and I love it. Each time I have improved some aspect of my turntables I have discovered just how good the Steelhead is. Changing from VPI decks to hot-rodded NOS vintage decks with Reed 3P arms. Ven den Hul Crimson Colibri. Brian Walsh doing his thing. 
The Manley Steelhead will not hold you back. I don't claim nothing beats it for the price, but I do claim it would be next to impossible to think of it as a limiter/bottleneck. 
Btw, many claim to have had hum problems due to the Steelhead and imho they are wrong. Once I jettisoned my two VPI arms, my hum problems went away. De nada. Zilch. Bupkis. 
I don't doubt Mikey for a second insisting that for his system, newer more elaborate designs beat it. But my system is pretty "up there", just not Mikey level. 

I ran a Steelhead RC for four years, during which time I went through four turntables, five tonearms, and many cartridges. I liked it a lot; for the money and versatility, it's hard to beat. But that said, it was readily bested by the Allnic H3000 that replaced it, albeit at a substantially higher cost.