seeking pure streamer.....Aurender A1000 vs N150 as a streamer only?

and I would have to step up to the N200 for coaxial out , nearly twice the price,

and if I were to step up, would the A200 stream just as well as its  priced similarly to the N200?

N200 USB is superior to its coax out. If you have a dac with excellent USB circuitry and good clock then use USB. 
As to A200 vs N200 - no they’re not the same and A200 is not N200 with a free dac. 
Here is N200

And A200 below

thank you

the reason I really like coaxial is I like to rotate dacs and I find coaxial to be a more consistently good connection (although USB better when done right just often hit and miss in my experience)

Then get n200 if you like to rotate dacs. Why waste money on A200 that’s most likely inferior to N200 as pure streamer when you swap dacs. 

@theaudioamp 

+1

The Aurrender N200 is a top notch streamer. Highly recommended. You do not want to get Axxx series... you are paying for something you don't need and compromising the sound quality by having the DAC packed in with the streamer.