Я пользуюсь SQLDirect Component Library for Delphi 3, 4, 5, 6, 7 and C++ Builder 3, 4, 5, 6
ver. 2.9

Должна выйти третья версия. Достаточно недорого(что-то около $99). Мне хватает пока бесплатной. Впечатления после перехода с ADO только положительные.

Basic features:
Using of SQLDirect Component Library gives you following advantages:
- use 32-bit native API of the supported SQL servers: Centura SQLBase Server 6(+),Oracle Server 7.2(+) with SQL*Net 2.2(+), IBM DB2 Database, Interbase Server, Microsoft SQL Server 6.5, MySQL 3.23, PostgreSQL 7.1, Sybase ASE and ASA, Informix and ODBC datasources;
- no distributing, installing and configuring the BDE and ODBC;
- give to you simultaneous access to any supported servers;
- You can use any Delphi 3, 4, 5, 6, 7 or C++ Builder 3, 4, 5 version (Pro or above) to develop Client/Server applications;
- thread safe;
- BLOB-fields;
- support stored procedure;
- stored procedure with multiple result set;
- bi- and uni-directional result sets;
- cached updates;
- filtering records;
- support all data-aware components (including InfoPower);
- using images stored by Centura SqlWindows(or Team Developer);
- interfaces (public methods and properties) of SQLDirect components is compatible with standard BDE data access components (TSession, TDatabase, TQuery ..).