What is Good Value Starter Amp in the 100-200wpc

IM LOOKING TO BUILD A SYSTEM .I HAVE NHT T5 EVOLUTION SPEAKER SYSTEM WITH THE X1 CROSSOVER AND A MARANTZ AV550 PREAMP,,I NEED TWO AMPS FOR BIAMPING THIS .I HAVE AN ADCOM GHFA555 ALREADY AND NEED OPINION ON WHAT WOULD WORK FOR THE SECOND AMP.CARVER TFM-25/OR PM175/ OR NAD 2400/LOOKING FOR VALUE AND QUALITY.