How many channels are you looking for?
Atmos pretty much comes by default, but you'll be better off pushung the boat out a bit and going for a 9 or even 11 channel decoding receiver if you are considering Atmos now or in the future.
Marantz 7010 decodes 11 channels but only has power amps for 9, you need an external ower amp for the last two (rear Atmos by default) or you can hook up the front left and front right RCA outputs to a "proper stereo" amp and speakers instead.
Its successor the 7011 has eleven power amps I believe.
The 6010 decodes 9 but only has seven power amps. Again you need a separate amp or a "proper stereo" to take advantage of the last two. Its successor, the 6011 (already being heavily discounted in the US) decodes 11 and has power amps for 9. So again you need a separate amp or a. "proper stereo" to take advantage of the last two. I am hearing some issues about the 6011s not working properly straight out of the box, however.
The new 6012 also has 11 channels decoded, 9 internal power amps.