Ok...I've decided to just go ahead and buy a thermoelectric cooler.
I've basically found three models that I'm considering:
Avanti 28-bottle ~$230
Edgestar 28-bottle ~$250
Urbina Design 28-bottle ~$230
Anyone have any experience or preferences? The Edgestar and Urbina Design have tinted glass. The Avanti has a better warranty. Urbina Design looks to be a tiny manufacturer...