I don't mind what it is either, I have downloaded the avg anti-spyware 7.5 setup file to see what improvements they talk about. I had hoped to install it in parallel and test together but, no joy it detects the presence of Ewido 4.0 (same guard.exe service, etc.) and prompts you to uninstall it and reboot.
My first scan with it took just over 9 minutes but, I forgot to pause the standard shield for that scan, so not much of an overhead with avast looking over its shoulder.
I have done another scan with standard shield paused and avgas 7.5 seems slightly slower for the same scan settings in ewido 4.0 almost 8 minutes against just over 6 previously with ewido 4.0.