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Just test drove both Hybrid and GR Sports. Won't get into details. In brief summary:-
1. GR Sports feels more powerful with hard acceleration. The Hybrid engine emits a louder and more prominent low frequency growl in hard acceleration.
2. Little difference in handling and suspension but can't really gauge with the short test drive route.
3. Overall impression, the steering feel, ride and handling meet my expectations. Steering doesn't feel light and is quite accurate and sharp. In comparison, the Honda CRV steering feels way lighter with less road feel.
4. Steering of GR sports feel a bit heavier than hybrid I think. Both steering feel and weight of the hybrid and GR Sports feel good to me.
5. Suspension, no complaints. Firm yet comfortable. Both GR Sports and Hybrid. Can't really feel the difference much, perhaps small difference or negligible.
Some pictures of the GR Sports:-


Also, viewed the interior of the Corolla sedan. The rear seats look more spacious inside than the Cross.

In summary, for my driving style the GE Sports is more suitable for me. The sound that the hybrid engine gives out during hard acceleration feels like it is struggling. If on fuel economy, then the hybrid wins all the way.
Will wait for the new Corolla to launch before making the final decision. Speculated price is RM145k.
I still like the look of this Altis, if not limited to older gen 1.8 engine I already bought it...