Hi Paul,
Glad you guys are safe and well
Interesting you say that the Denon is less prone to IGD than the AT or Benz Micro, as technically because they have the 'superior' styli, it should be the other way round!
I don't doubt what you're saying though, as with my Denon 103GL, I get *minimal* (virtually inaudible) IGD, as I'm super-fastidious with set-up and also about ensuring that the cartridge I use is ideally suited to the partnering arm, especially in relation to mass [crucial in minimising IGD].
Using, say, a low-compliance MC cartridge with too light an arm (and/or headshell) is a recipe for creating all kinds of nasty distortions, or for that matter, when a 'posh' fine-line stylus (of an expensive MC cartridge) isn't optimally aligned with the grooves it's tracing, such as would be the case if VTA, VTF and/or azimuth weren't *absolutely* bang on.
In terms of the two cartridges I mentioned, I can't say whether or not they're less prone to IGD than the AT or Benz, simply that they'll likely sound as 'musical' and 'richly toned', as the Denon, plus be a little more open, detailed and 'well behaved' at the top end, and so would give you a nice option to have sometimes instead of the Denon, if you fancied a slightly different 'flavour'.
Marco.