Quest for an external Dac has resulted in me way down the rabbit hole

Hi audio wizards!  I’ve read several articles and reviews about the benefits of a good quality external DAC, and the potential for “real” improvements in musical quality in a current system. I do believe my system might be in line .  I currently have a Rotel 955 CD player I like, a nodeii and a Creek evo 100 integrated amp.  The Ohm 1000 speakers sound a little lean in the top end although I do like them overall.  At this point I’ve been looking for a Dac that would bring a little more “spring and liven up my system”.  However, the more I research, the more confused I get.  I’ve been to a couple higher end stereo stores and I seem to just get the “party line”.  I live in Denver Colorado, and although I like the PS Audio line I can’t afford them.  If any one has any advice for me on a good quality external     
Dac model for under $1000 (new or used) I could sure use the help! Thank you