What are the pros and cons of the different
Firebird/Interbase access methods for Delphi?

[Duplicate of earlier post. Should have posted this
via Yahoo groups the first time so news.atkin.com users
can see it]

Some specific questions would be:

1) Why would one want to use dbExpress over
IBX/IBO/FIBPlus (or vice versa)?

2) What are the pros and cons of IBO vs. FIBPlus?

3) Are there any practical reasons for choosing IBX
over the (ostensibly superior) 3rd party FIBPlus or IBO
components?

4) If price is the factor and one does not wish to
purchase IBO or FIBPlus, would it be advisable to
use ZeosDB objects instead of dbExpress or IBX (both
of which already come with Delphi at no extra cost)?

5) Related to #4 could be: how serious are any FB
incompatibilities with IBX and the dbExpress Interbase
driverL