I've tested Panda in a VM. I've not done malware tests, I've only tested the software it self, it's awful. The design doesn't make sense.
here is what I found:
Cons:
awful user interface, tiny window, can't be expanded, have to click to show some more that's hiding below.
Nags you about registering email, every time. I know getting alerts if I got pwned is nice, maybe that's what it wants me to do, but it don't mention it, it mentions stuff about managing account. But nagging me about doing it isn't. No ''don't ask me again'' option.
VPN only lasts few seconds, so can't even be properly tested.
No scan options in the task bar
Pros:
The settings are simple, easy to navigate, change settings. This is the best part part of the design. Completely different design philosophy.