You're just going to have to do a trial and error basis IMO. Install the utilities and if they are flagged by McAfee you can always allow that program to run. Same with web browser addons, if McAfee sees it as a virus you can always allow that program to run through the McAfee options.
I use McAfee on my laptop (that i'm no right now) and it works fine for me. I wouldn't pay for it, but I get it free b/c of Scottrade. IMO it isn't as bad as people make it seem, gets the job done for me.