I'll be honest: the few times I've used a Danish taxi, they've been very good.
In general it's like hiring black car service in the US.
Pick up time 8 minutes in Aarhus as of writing. If I go to Ikast it's 24 minutes.
And a 10min ride is 25 USD. A hour ride is about 200 USD.
Might try it if I ever need a taxis, but it's still a bit pricey.