classe ca 200 vs mccormack dna 225

i have a chance to ether buy a 5year old dna 225 for $1600
or a 10 year old ca 200 for $1100 . I plane to biamp two to
ether a pair of B&W n803 or aerial 7b . Iam kind of scared
of buy sutch a old classe but other people have told me
that this is really not that old and the ca 200 will buy
a better amp than the dna 225 . what sould i do .