I bought an Esoteric UX3Pi about 6 months ago to replace a Consonance Droplet 5 with upgraded Russian valves. The latter (which I am going to sell) always sounded very good, but now that the UX3 is becoming more and more run in (some dealers reckon it can improve for up to 12 months), the level of detail, image size, overall linearity across the frequency range is superb. Through a Burson HD160 amp and Sennheiser HD600 it all sounds very good, but am in the process of buying Ultrasone Ed 8's, as these should take more advantage of what is coming out of the UX3.
The build quality of the UX3 is superb, both inside and out. Other transports, even in some of the very very high end kit just doesn't compare. This should stay with me for a long time.
Fed into PMC OB1's via a Primare i30 amp, using a mixture of Transparent Audio and MIT cables, the set up is excellent. I suppose an upgrade to the amp could improve matters, but where do you stop!