what are some of best tonearms you own or experience with.

The Basis Vector 3 which I owned was a great tonearm. I really made me aware of the importance of high quality tonearm.

The current tonearm on my Garrard 301 is an Ikeda IT 407 CR-1. A great match with low compliance cartridges in particular Ikeda cartridges. A worthy successor to the Fidelity Research tonearms. 

@dover 

+1 thanks for the great informative post!

Excellent turntables and tonearms

https://www.amg-turntables.com/

???

"best-groove

Excellent turntables

brrr....unwatchable..not even free!!"

@sokogear 
Your question about Rega wasn’t addressed to me, but I have owned a 600 on a p25 turntable and a Basis branded 250? On a Basis 2100 turntable.

When I replaced the 250 with a Basis Vector 3 the difference was a massive improvement. Although Mr. Conti at Basis said to expect this actually hearing the difference allowed me to understand how much a difference a tonearm can make.
Based on that I think Rega is “good for the money” but not a great tonearm. Just my experience, yours may vary