used Takumi K10 or new Airtight ATC5

[MbraHam]

Hi there,

 

I use a pair of Airtight ATM3 power amps and have been offered a used Robert Koda Takumi K10 for about the same price as a new Airtight ATC5. I've heard the ATC5 and know it'd be a great match and know the K10 only by its reputation. Anyone able to offer an opinion or even advice?

 

thanks,

M