is it comodo antivirus tested?
latest tests that I know of:
http://malwareresearchgroup.com/forum/viewtopic.php?f=20&t=47 (unofficial realtime test)
http://malwareresearchgroup.com/forum/viewtopic.php?f=20&t=80 (unofficial rogue test)
http://malwareresearchgroup.com/forum/viewtopic.php?f=18&t=13 (official test)
detection rate is good,but with defence + is better ;D how much???
can u recomend some anti-malware anti-spyware software?
A squared is good,but only trial 30 days 
You can use the free version of A-squared.
The detection of CIS is good, not great, but improving all the time. It has come from far, and is approaching destination 
eXPerience
I would say with Comodo you really only need to run malwarebytes and superantispyware free versions, to do a scan every so often.
That goes to every AV out there.