I'm currently looking at two options for upgrading my receiver. First, I could buy the Yamaha RX-V640 and used amplifer (probably arcam, adcom or rotel) to power my main speakers for stereo playback and lighten the burden on the receiver for movies.
Or I can buy an RX-V1400 that has a bigger power supply and more juice, as well as a few interesting but not essential features. What would you do?
Any advantages to using the power amp instead of the receiver or am I better off with investing in a larger receiver?