Im planning to upgrade my current set-up from integrated amp to seaprates-pre and power amp. My current integrated amp is a Rotel and has pre-amp functions, so I will just have to buy a Power amp. Please allow me to seek suggestions for Power amps that offer the best value at a US$1000 budget. Im thinking between the ff brands: Marantz MM 7025, Emotiva XP200, Musical Fidelity M1PWR, but any other recommendations are very much welcome. I listen to vocals but also listen to Rock and Roll. My speakers are Tannoy Revolution DC6TSE. Appreciate any advice from the group. Thanks in advance.