I'm still using HYC plan.

thinking to change plan since 2019 but never did.
This time maybe change to new Pantas or Unlimited. But there are up and downsides though.

HYC
Call and SMS cheap
RM 10 - 10days validity
Internet a little expensive compared to other plans. RM45 for 8GB. RM5.6/GB
50 days grace period I think.

Pantas/Fast
Call and SMS on the expensive side , not that frequently use call function
30sen/60s - 60sec block
15sen/sms
RM5 - 5day validity
RM10 and above - 30 days validity
RM30 for 365days validity
Internet much cheaper if not heavy user like me since home and work have WIFI. Plus 365days validity. RM30 for 20GB (365days). RM1.5/GB.
30 days grace period. Which is think is too short.

Unlimited
Call and SMS - ok
15sen/30sec - 30sec block
15sen/SMS
Call and SMS free if purchase Unlimited Internet Pass
Top up amount determines active period
Internet plan is by speed and *unlimited. 3mbps up to 18mbps. RM60 for 18mbps (50GB max). RM1.2/GB.
*Fair usage policy applies.
6mbps plan - youtube reviewer can get 3-4mbps download speed, 8-10mbps upload speed.
Digi had the highest download speed in Malaysia at 15.0 Mbps, followed by Maxis (13.4), U Mobile (11.5), Unifi (11.0), and Celcom (8.2). - report by OpenSignal 2021.
Moreover need to buy extra data pass if want to use mobile hotspot. RM5
50 days grace period.