Which Tomax models benefit the most in Very Soft and Rich Soft?

I've read some reviews saying the Muses Kokalo benefits from the Rich Soft. How about the newer Tomax Virgo series? I don't see many reviews for them, especially the softer versions.

I recently got my first onahole (Venus Real Soft) and am impressed. The looser canal and subtle texture really does feel pretty real when warmed and lubed. The only con is the hump near the top entrance can be overstimulating to the point of irritating at times. I enjoyed it so much that I followed it with a NPG Meiki Seductive Young Wife 2nd Gen Tsukasa Aoi. I find this a bit softer than the Real Soft with a tighter slightly more textured stimulating canal.

If I have a Venus Real Soft is it different enough and worth trying in Very Soft or Rich Soft?

TIA!