I haven't used Bit defender before and the user interface doesn't seem anything exceptional. Although the functionality is the key and for that I feel its alright.
I also have no idea if 97% is a good detection ratio or not. Of course I do not have a previous experiences of testing an antivirus so I am going to take you word for it. But the files getting randomly deleted by a malware that remained previously undetected makes me loose some confidence in it.
97% is stellar detection rate.
it's one of the best products on the market.
I was being a bit critical because I was actually thinking of buying it. Although I have a few months left on my current anti-virus but it really slows my system down.
what are you using?
I got a free McAfee and also windows Defender