Samsung's presence in the Singapore's IP camera market is only fairly recent, so you don't see a large user base here. Panasonic has been available in Singapore for a while, but feature per dollar wise, they are not that competitive, particularly when there are OEM models that are less than half the price of a Panasonic. Most of Panasonic's models do not have IR night vision capability, a feature that I find to be extremely important.
I have over 30 cameras of different brands, but I only have one Panasonic model (BL-VT164) and one Samsung model (SNH-P6410BN).