After using tingkat delivery dinner for years, I think I might share my 2 cents worth, since I was benefited from some precious posts when I started.

Conclusion: all different companies have the similar service and food quality standards when the charges is at around 5 dollars per head per meal. If you want better food, pay more. I said this based on having tried at least 6-7 tingkat companies, all were mentioned somewhere in this particular thread.
I have not tried momscooking as their price is too steep for me, almost 10 dollars per head per meal, but the general feedbacks are good.
I m ordering from richfood for now, and by far the best one I shall say. I first came to know them when I searched for confinement meals, their food is good and comparatively the cheapest among the few companies provide confinement meals. However, when I asked for their tingkat service after baby full month, I realised the price is on the high end, abt 7 dollars per head per meal. Took a dive and hope for the same standard as their confinement meals. Never regretted my choice. The food quality is noticeable different from those who charged at 5 dollars, at least I can feel it.
If you want some good food and don’t mind paying a little bit more, you can try richfood, not sure if they provide trial though, I straight away ordered 20 days.