Basis Ovation / 2500 vs Sota Cosmos IV

Hi all:

I am looking to upgrade from a older Sota Star Sapphire and these have made my short list. (I know the Ovation is no longer available)

Anyone have experience with these ?
Basis Ovation
Basis 2500
Sota Cosmos IV

From what I hear, the Basis are very well made and machined.

Thanks in advance.
Regards