I feel your pain, my Studio 40v3s are hooked up to a Sony 5.1 (admittedly, just two shy of what was the top of their non-ES line), and I'm derusting (yes, someone abused the poor girl) a Mc2120 Amp right now to replace it.
Though I hear McIntosh's trade-up program is still ongoing... It's tempting to part with thie 2120 once I have her all clean and the felts replaced and go a bit more modern.
Remember: never trust "wattage". Everyone measures differently (and car audio is worse: they often simply lie). I'd take a McIntosh at the rated wattage over any of the "mainstream" lines at twice the rating.