No doubt the Cosmos is a good table and likely you will be happy should you acquire it. As I recall Paul Seydor reviewed a Sota Cosmos in TAS within the last several years. He loved it. Subsequent to that he reviewed the Basis 2200 and stated it blew away any turntable he had ever heard. For reference, the Basis 2500 you are considering will perform better than the 2200. Likely perusing P. Seydor's reviews will reveal whatever the differences are between the Cosmos and Basis 2200. Paul owns Quads, a good sign in my book, and seems like one of the more level headed reviewers out there.
I owned a Basis Ovation for several yrs and loved it. Replaced it with a Debut. My buddy has had his Ovation for yrs with superb results. During his 1st yr of ownership he had to locate the table on top of his subwoofer. Many tables require placement on some type of isolation stand to reduce footfalls and other vibrations that impact fidelity negatively. Whereas with the Ovation's outstanding suspension, similar to the Debut's, there was no sonic impact in placing it on a subwoofer. An amazing testament to the quality of the Ovation and its suspension. In my experience, the suspension enables hearing micro dynamic details overlooked by many other tables and which adds a lot of enjoyment to listening sessions. If you like the Ovation, I would not hesitate to acquire it due to it no longer being in the Basis line. It is built like a rock and Basis will support it in the unlikely event there are problems.
