A bit of clarification, which streamer you’re currently using and ARES II should have USB input along with SPDIF.
You got two reasonably good sounding DAC’s. I am in a camp where both DAC and Streamer quality matters. I am not going to get into a debate which carries more weight. If you’re deferring your DAC purchase then I would focus on either Pulse or a used Aurender N10. Both of these streamers should offer beautiful pairing (SPDIF output) with SE-I and USB or SPDIF out to Ares II now and with whatever DAC you choose down the road.
The Pulse Mini or N100 would be an intermediate step if you’re considering a DAC upgrade down the road.
+1 on @sns recommendation of Amanero or XMOS usb board in dac.