OEMs vs. CABs

[Shiva]

Is there any advantage, other than saving yourself some time, to installing programs via OEMs rather than through CABs?

One big disadvantage I see is that when a new version of the program comes out, you'd need to reflash to update (rather than uninstall the old cab and install the new cab). Or is there a way to uninstall OEM'd programs too?

Is there something else I'm missing? Any performance or memory advantages to installing via OEMs?