Best Buy or Good Value in a Transport CD

I've been using a Cal Delta / Cal Alpha transport DAC for a number of years and have been very happy. Well, the Delta transport needs repair and I'm was wondering if I should consider anything other thant having my Delta repaired or purchasing another Delta. There are many used Delta's here on Audiogon for sale. My budget is $500. I don't want to invest in too much since I hope that this will be a short term fix with the newer generation upsampling CD players and SACD. Bottom line is, for around $500 used, is there anything better out there?