Rotel, ATI or Parasound for Vienna Acoustic Straus

Hi, I'm looking for a 5 channel amp to drive my Vieena Acoustic Strausses and I'm thinking about Rotel, ATI or Parasound? Looking to but used and spend about a grand, + or -. Anyone actually listened to anything similar or have some relevant experience? It's hard to find these in my small town. Thanks so much for your help!