Sunnyside or Superior-Sunnyside are a Chinese Manufacture of diecasts based in Hong Kong. They have a similar distribution network to Kinsmart, here in Tbilisi I often find them in the same shops. The Sunnyside models are two or three lari more than the Kinsmart models but they have opening bonnets as well as opening doors.
I particularly like the 1963 Chevrolet Corvette Stingray.
The four models I have are all in 1:32 scale with pull back motors.
Other scales are available like 1:24 and even 1:18.