@chakster, for people who want to swap cartridges all the time removeable head shells are very convenient but, they are a compromise when it comes to performance. If I really needed a removable head shell I would not get any of those arms. I would get a Kuzma 4 Point 9.
I have found that I only want to listen to one cartridge, the one I like best. With the exception of 78's the best cartridge is always best at all genres. I also do not mind setting up cartridges. I am not willing to compromise. I want the best performance possible considering the tradeoffs. Once I set up a cartridge it stays put for years, sometimes more than a decade. If comparing cartridges is your thing the best way to do this is with multiple arms. Unfortunately for me the only turntable I like that takes two arms is the Dohmann Helix which has not fully evolved yet and is currently out of my price range anyway.
I have found that I only want to listen to one cartridge, the one I like best. With the exception of 78's the best cartridge is always best at all genres. I also do not mind setting up cartridges. I am not willing to compromise. I want the best performance possible considering the tradeoffs. Once I set up a cartridge it stays put for years, sometimes more than a decade. If comparing cartridges is your thing the best way to do this is with multiple arms. Unfortunately for me the only turntable I like that takes two arms is the Dohmann Helix which has not fully evolved yet and is currently out of my price range anyway.