Which one is better ODS-INFOCUBE for reporting in BW

Hello expert's
1.I want to know which one ODS or INFOCUBES are better (technically/functionally) for reporting  purpose in BW.if some one is having any comparisons on ODS/INFOCUBE then plz pass on to me.
2.Are Z tables reliable in case of data updation and fetching when we create ODS/INFOCUBE.
3.HOW RELIABLE THE "Z"(*TABLES/REPORTS) are in SAP-BW/R/3-ABAP.

1.Cubes are optimized for reporting..due to star schema structure.Use cubes for reporting aggregated data to be accessed by large number of users.
ODS are for detailed level reporting.ODS structure is like flat DB table.
usually drilldown is setup from cube report to the ODS report.
2.Are u referring to custom ODS and cubes..then they have the Z tables internally..reliability depends on ur design.But always try to use BC content,else copy BC content and change/enhance it.else if no BC content found then create Z-content directly.
3.Again,depends on the design.But always using BC content is suggested.
cheers,
Vishvesh

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    3. When you say Z tables/reports, they are totally custom made. So, if they are used regularly in R/3, i think they must be reliable. If they are not reliable, they would not use them in the production server.
    Hope this helps.
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