Based upon community responses (and someone from the organization being in the Slack group and responding as well), we ended up going with SearchStax. I work a

Based upon community responses (and someone from the organization being in the Slack group and responding as well), we ended up going with SearchStax. I work at a state university (with the associated purchasing ... issues :)) and we had some staffing issues, which they were very accommodating of from initial quote to subscription. If we end up running into issues as/if we expand our usage (we're essentially only using Solr for the mandatory bits) I'll keep Coveo in mind. :)