Amp needed for contour S1.4

Hi, I have recently purchased a used dynaudio countor S1.4 which i am playing with naim nait 5 and Marantz cd6002, i know the speaker is great and dynamic if given proper amplification and nait 5 seems to fail in some areas where power is needed.
I am looking to change my amplifier in the budget of $2000, i have shortlisted few like McCormack 225, krell 400i, and anthem 225.
I have listened to these brands except anthem with variety of speakers but not with dynaudios. Since anthem looks great in specs and in my budget, i am more keen towards the brand however i have never heard anthem playing any current guzzler speaker like dynaudio.
Please share some information if anybody here have any experience with anthem or McCormack.

Thanks in advance