The van den hul DDT/MC one have a very relaxed presentation, but dig deep. You can hear right into subtle detail, without the sound becoming bass heavy or bright - they are pretty neutral. They are beautifully balanced, allowing you to hear right into the performance. I would push to the MC One Special if you can afford it.
The AT9 series tends to be a little more clinical.
Both are great value.
Very much depends on the rest of your system and how you want to voice it.
Also be mindful of your phono stage and gain - matching is important.
The Well Tempered is now owned by Dynavector shareholders and were commonly demoed together as a pairing for many years. Also Well Tempered / Van den Hul was a common pairing with excellent results.