I haven't heard either, but I did audition the little brother, the April Music Stello CDT-200 ($1,500.00) for two months at home.
It literally blew away my Theta Data Basic II in every aspect except the depth of the soundstage. So much so in fact, that I tried to put the Theta back into the system and couldn't handle it any longer.
I ended up going with a demo Accustic Arts Drive 1 ($5,300.00 List Price), but recommended it to some friends who auditioned it and bought one themselves.
We all added the $25.00 IsoClean Gold Fuse from Artistic Audio and it improved both the April Music Stello and the Accustic Arts transports significantly.
Another friend has had the Levinson Nº36/37 combination since they were introduced 9-10 or more years ago, so I'm very familiar with it. I considered picking up a used one, except for the drawer problems. Even my friend has to manually push his in now. I also ASSUMED that the newer technology would be of a benefit with the current transports.
The April Music components are getting rave reviews, and from my friends' and my own personal experience with the baby brother, had I had the extra money, I would have explored the Eximus path.
The Oracle, other than reading the reviews, I know nothing about.
Hope this helps,
Chuck