I have spent time with the 3.2 and 3.8, not the 4.2 and I am a Raidho dealer.
The TD series is all about accuracy and massive images. They are wonderfully detailed but not grainy of fatiguing. Bass is tight and refined but not quite full range. Very good if you want a deep and immersive soundstage and you want to get the most out of tremendous electronics.
The biggest challenges with these are room integration. You want a medium to large room with a lot of space behind the speakers. If you have 5' from the wall and 9-10' between the speakers with brilliant electronics, those will deliver a jaw-dropping listening experience.
The TD series is all about accuracy and massive images. They are wonderfully detailed but not grainy of fatiguing. Bass is tight and refined but not quite full range. Very good if you want a deep and immersive soundstage and you want to get the most out of tremendous electronics.
The biggest challenges with these are room integration. You want a medium to large room with a lot of space behind the speakers. If you have 5' from the wall and 9-10' between the speakers with brilliant electronics, those will deliver a jaw-dropping listening experience.