I faced a issue with their supprt related to NTA module support. One of the Cisco Device NTA was not working asked engineer to come on call with Cisco, however they directly refused to join the callto explain the issue. As per solarwind TAC sending email with error makes them clear from their end. I didnt find such terrible refusal from any vendor to join call. Pathetic customer support...My case number was Case # - 00514586 NetFlow data is not received in solarwinds. Finally i solved issue by self 
, you cannot accept deep diving of issue/support from solarwind TAC.
