Sorry I didnt respond to your message.. Are you sure those Hifonics amps arent Refurbs? I thought the dealer cost on the ZXI1006 is $350.
One other brand you might want to consider for the price is Crunch.. I know the brand used to be crap, but its another one of those brands that was bought out by Maxxsonics. So now you can basicly get hifonics quality under the Crunch name.
Check out the PZI1000.1 or 1500.1. They are class A-B, 1 ohm stable and come with a remote knob. The 1000.1 you can get for around $135 the 1500.1 for around $165. You could also look at the PZI325.2 Briged at 4ohm you would get around 650-700w. you can find one of those for about $120
Depending on what speakers are in your box you can probably re-wire it to run a 1ohm load.
And yes, Boss overrates their stuff and they suck.