My friend has one of these and his very old Rega R100 ? (s shaped) tonearm needs replacing.

For those who may not know it , it's sprung like a LP12 but has electronic speed change, and doesn't look much like an LP12. I think there are pics on Vinyl Engine.

Anyway, I first thought of an RB250 or maybe a used Akito/Ittok

any recommendations?
ps budget is peanuts

thanks