Security through obscurity; yay FBSD? Templi's advice is solid; but I have to ask, you've been getting so many varients, have you considered what is making you so targeted/is infecting you?
Perhaps cut back on all the sketchy pr0n sites and e-gambling ^^
But in seriousness, if infection is this regular a thing; check your various potential vulnerabilities (see; browser, email client, firewall) and attempt to secure them, or at least identify the behaviors that are putting you at risk and change them. I can't recall the last time I got hit with anything of any noticible severity; and I don't go to any difficult steps to secure myself.