right now, i got both PKDM and JDM altos with me, i prefer PKDM caz of better cooling an reliability.
AC performs decent enough, not to make u sweat in the summer noon, blower is good enough as well. (i can tell based on experience in last summer)
BUT there is absolutely no TINT or HEAT insulation in the windscreen or windows glass.
the AC havent tripped on me due to any reason, Yes just like any other modern car, when the car is accelerated suddenly the AC trips for a second to provide full power needed to accelerate the car and then again starts working in next second.
the car im talking about is a 22 model, purchased brand new and with no maintenance done beside oil change.