eFax is based on a subscription service. Considering we have a relatively new fax machine paid for, and only send a couple of faxes a month (but receive a ton of junk faxes), it would end up costing us $$ to switch to it.
I was thinking stand alone, like WinFax, but one that is good

I can't see us paying a subscription fee to receive junk faxes.
Any other ideas?