Either is likely fine from an input impedance perspective.
Usually it is tube pre-amps that have higher output impedance that some SS amps can handle better than others typically with input impedance ~ 40 to 60 Kohm or higher.
Anthem amps are products I have heard recently that I would consider owning. Have not heard Parasound but those are also highly regarded in general. Either should work well and sound good it seems in your case.
If you think you would ever consider using a tube preamp with the amp you choose I would choose the amp with the higher input impedance which sounds like the Parasound, all other things being equal.
Usually it is tube pre-amps that have higher output impedance that some SS amps can handle better than others typically with input impedance ~ 40 to 60 Kohm or higher.
Anthem amps are products I have heard recently that I would consider owning. Have not heard Parasound but those are also highly regarded in general. Either should work well and sound good it seems in your case.
If you think you would ever consider using a tube preamp with the amp you choose I would choose the amp with the higher input impedance which sounds like the Parasound, all other things being equal.