Lester,

> That is a reason for using TDataset, but I would still be
> interested if there any facilities that are missing from
> IB_Grid for those of use who do not have that restriction.

the tree of grouped records together with drag'n'drop makes for a very
nice look and feel.
IB_Grid can not (and IMO should not) behave as a tree. If you don't need
it, you can probably get away with IB_Grid without regrets.
Ciao
--
____
_/\/ando