I wouldn't use 360 Total Security Essentials because it is updates and features behind, I recommend you use 360 Total Security, although the cleaner and speedup you may never use it has more features like PUP blocking and other things. If you want peace of mind or to feel more secure:
Click on Protection ON then click configure, security mode is the best (Bitdefender, Avira and their cloud engine)
I wouldn't use 360 Total Security Essentials because it is updates and features behind, I recommend you use 360 Total Security, although the cleaner and speedup you may never use it has more features like PUP blocking and other things. If you want peace of mind or to feel more secure:
Click on Protection ON then click configure, security mode is the best (Bitdefender, Avira and their cloud engine)
I'm using 360 Total Security with Protection Mode on Security. I also have PUP enabled (this was added only a few days ago in Security Essential). The Cleaner and Speedup are amazing. I also enabled the Browser Protection.
I have nothing against 360 Total Security per-say, but there's no way I'm going to trust a vendor that may as well be sponsored by one of the worlds superpowers. Whether it's the United States, Germany, Russia... or in this case -- China, makes no difference.
Qihoo 360 TS Essentials is fine however consider only that some features are unnecessary like cleaners, although in the firewall category where built in from Windows already supplemented it.
You may regularly use their Sandbox feature since few of users use it as others rely to add another third party components.
Privacy on Qihoo and other Chinese products is an isolated issue at all.
Meanwhile add a backup program to have system image snapshots accessible anytime.