Cary Audio CD Player 306/200 Upgrading a transport

I purchased the Cary Audio 306/200  CD Player in 2004 for its retail price of $5000.00.  I later purchased a Chord Qutest Dac and the sound improved and I began to use the Cary exclusively as a transport. I recently purchased a Weiss DAC 204 and the sound improved once again. Here's the question, would upgrading to an Audiolab 9000 transport  currently retailing for $1500.00 be an improvement over the Cary CD Player? There are also other transports such as the Shanling ET-3, Jays Audio CD transport, MK III and Leak Audio CD transport. I find the Cary build like a tank and is all steel. But has cd transport technology improved in the last 20 years?  Thanks for the input.