Drop in replacement for Rega RB300?

I asked a similar question on Audioasylum a while ago:

Rega arm drop-in replacement ??

A couple of arms that will work:

- Rega derivatives (Origin Live, Moth, etc.)
- Schroeder No.2 and DPS
- Bluenote U3, B5, Borghese
- Graham Robin
- Hadcock 228 and 242 (with a brass mounting collar??)
- Possibly Wilson Benesch Act 0.5
- Roksan Artemiz, Tabriz(Zi)
- VPI JMW-9

Not sure which arm will be a good match to the Sota. Also, it should be easy enough to change armboards, no?

I hope to get confirmation because on a couple of
suggestions it appears it is a "maybe".

The Rega derivatives will of course work. Schroeder is o.k. as well. The Robin
has been designed as Rega drop-in, but is now discontinued. For the other ones
it would be nice to hear from someone who have tried this.

I have a table where it is not so easy to change therefore I am looking forward to
more suggestions as well ...

Rene