Audio research ref 6SE vs world

Which tube or SS line stage do you like as much or more and why? Any cheaper options that you actually preferred?
Just heard a friend’s Allnic M3000 or something tube preamp and it was really nice!  Thing weighed over 50 lbs and had terrific bass and clarity.

Nobody mentioned Allnic yet so here you go.
I would love to know if anyone has opinions between the Allnic L3000 mk2 / L4000 and the AR REF3 preamp.
@redwoodaudio Allnic quite pricey though right? I wonder if there is something cheaper than ARC that can compete well with it sonically.

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