Coda s5 vs. s12

since these two amps cost the same has anyone compared the two?
the s5 is 50 watts class a and the s12 is 125 watts class ab with the first 35 watts i believe class a. both double in watts as the impedence halfs.
If you carefully read the Stereophile review (latest issue) of the s5, you will find that it will make 25 WPC class-A and does NOT double in watts as the impedance halves.