Avalon Indra vs Opus Ceramiqu

I’m using a Avalon Opus Ceramique, and I have chance to buy a good conditioned 2nd hand Indra (Indra-1). But I’m wondering if Indra sound much better than Opus Ceramique?

On the other hands, does Indra are much difficult to drive than Opus Ceramique? Thanks.

I would speak to Avalon directly and ask about any future serviceability issues in buying either of the models used and then ask about their driveability and sonic differences.  

Their contact information is near the bottom of their splash page.

I drive my Eidolons with Cardas cable, big KT 88 tube amplifiers full range and crossed over to two Velodyne DD Plus at 34Hz. On many LPs the subs get turned down or off.