@rauliruegas I would be absolutely shocked if you can provide evidence that SME V at some point had a knife edge bearing. This is completely false. But I'll eat my words if proven true.
Good news, but the old 407/23 is that good?

Btw the "23" is the angle. The wrong one was Saec 308 models, and probably 317. 
Earlier SME tonearms were known for the knife-edge bearing.  It was one of their advertising points.  If the SME V does not incorporate a knife-edge bearing, then I stand corrected.  Whether it does or does not is irrelevant to me.  Is it shameful to use a knife-edge bearing?  If so, I never knew that.
Should make the SAEC 407 ( i believe its a 23 as I can use its alignment template) worth a few more bucks. I am getting ready to pull it off and mount a Technics EPA 250.
I paid $1100 for my WE-407/23 about 5 years ago.......and it is an exquisite piece of eye-candy as were all SAEC tonearms (detail).
I also had the WE-308N which certainly had a puzzling geometry (detail).
I now have the WE-8000/ST which is probably the best of them.

As beautifully designed, detailed and machined as these arms were....they are not the 'last word' in tonearm technology being shaded by contemporaries like the FR-64s and even the Micro Seiki MA-505S.

To be asked to pay $8K-9K for a 35 year old design which doesn't have VTA 'on-the-fly' adjustment is an insult IMHO......