On the internet radio front, you may want to investigate a decent USB sound card/DAC unless someone here can vouch for the Mac's internal sound card. Also, at least on my Windows laptop, the difference in sound between running the laptop on battery versus AC is not a subtle one (much lower noise), so a higher value battery may be a wise investment. There are many great internet radio stations out there to listen to. My favorite is Radio Paradise's 128k AAC feed.
The other advantage of a laptop in your rig is using a desktop as a remote server for your laptop via wifi and iTunes.
No experience with either speaker -- maggies and tubes here.
Good luck
The other advantage of a laptop in your rig is using a desktop as a remote server for your laptop via wifi and iTunes.
No experience with either speaker -- maggies and tubes here.
Good luck