A speed comparison with same database and same hardware with MSSQL 2008 for processing 32,000 records shows this results:
Real Studio MSSQL Plugin: 2.5 hours if it does not crash!
MBS Real Studio SQL Plugin: 14 minutes
So this client is happy and enjoys our plugin and continues with Real Studio.
Your milage may vary as those benchmarks depend on a lot of parameters. But at least you should keep your database code able to switch so you can compare between various plugins.
PS: With MBS Real Studio SQL Plugin we also connect to Mircosoft SQL Server from Mac and Linux using freetds library which is not supported by Real Software's plugin.