older CD transport vs newer ones.

I added a fairly inexpensive CD transport to my DCS Rossini DAC/Clock and am shocked how much better it sounds spinning a disc vs streaming it.  It's not even a close call.  I was thinking of bettering my CD transport and was looking at options such at the Jay's CD transport.  There are also options such as Mark Levinson 31.5 which was a 10K unit in it's day.  Any thoughts on the best way to go?  I get a little worried about one of these older units breaking and not being able to get it fixed.