Josh - a short list is not easy. Tech changes so quickly it's hard to make a list of what to try.
Wisnon is obviously pretty happy with the performance of the Lampizator Golden Gate (although I think he has a Lampy 7). CTSooner and I are very happy with our ODSE DAC's. Many have reported good things about the newest version of the Bricasti M1 and the newest software upgrade of the PS Audio DAC. And Esoteric, MSB, DCS and such are always pumping out newer versions of their Uber dacs. The Chord DAVE is intriguing and the Rockna DAC I was recently made aware of looks pretty interesting as well. The Rowland Aeris was a sensational DAC when I had it also.
If there is one thing my trek has taught me is that if it interests you, you need to hear it for yourself in your system. It's the only way to really know. Not just hear it at a show or in a store, but in your system in your room. Dealers these days are typically happy to lend a piece of kit to you for a few days if you are sincere. Sometimes a deposit or payment in full with refund may be needed. It's worth it every time!
As a bias, if you are looking for PCM only to get the best damn red book you can, it will be touh to beat my little ODSE.