There are better options, I suggested a highly successful one.
Of all the spammers I was able to get in the last few months, only maybe 1-2 IP addresses had multiple spammer accounts on it. Looking at some of their history, many were logging in through various VPN's/proxy servers and they weren't consistent. So no, it's not really "better".
Thanks to the moderators for doing so much to address this spam problem. I had some time off from work and figured out why they have been getting through. Our registration system should block them automatically now.