I use SUMO to check for updated programs but I like to download and install manually from authors page and Sumo is perfect for this.
I see lots of you complain about SUMO and bundled software, every KC program has 3 versions: regular (with Relevant knowledge included), lite and portable (zip) which don't have anything bundled. Download portable and you are good to go, no additional software, no installation.
BTW. KC has disclaimer on his page explaining different download options.
I tried few other but don't like when they try to install services, run on boot and stuff like that.