Armorshade Enterprise
this place offer safety film from 4 mils up to 12 mils price range from Rm400 - Rm 6.8k.
VLT for safety film = 98% (as it is clear film)
UVR for safety film = 99%
IRR for safety film = 5% - 10% (as safety is the first priority,u can always have second layer to increase the IRR or get the 2-in 1 film)

if u need something really work,the price will go beyond your budget.
most film offer UVR(ultraviolet rejection) of 99% IRR(infra red rejection) of 30%-94%,and most film exceed the legal VLT (visible light transmission) limits of 70% FWS and 50% rear ws and doors.

v-cool have the nice IRR and VLT % but,the price is around 1.8k - 3k for a myvi (if u need something really works)
air-cool,ecotint,v-good,llumar,tint world,3M and other tint shop have variety range of VLT and IRR,

so when u want to get ur car tinted,make sure u ask them clearly the VLT,IRR,and warranty details.
normally IRR up to 60% is already sufficient (far way better than no tint)....but if ur wallet is full enough go for 80-90 % 

hope that helps.