what is the best anti spam program

There are always lots of different opinions on which is the best anti-spam / anti-virus, anti-spyware, anti-hacker, anti-whatever. In a lot of cases, it's down to personal preference. Also, the "best" could mean different things to different people - you might mean the most automated, the most sophisticated, the most cost-effective, the most up-to-date, etc.

I have always used Norton Antispam because it is built into Norton Internet Security which is my favourite anti-virus / firewall / anti-spyware / anti-spam bundle suite. It's not especially clever but it integrates nicely with both Outlook and Outlook Express and it's very easy to use.

The smartest anti-spam solution is probably not software at all. You can actually get hardware devices that filter out spam before it even reaches your PC. You can also subscribe to services with companies such as Message Labs, whose sole business is to be experts in filtering your mail before you even start to download it. These are REALLY expensive solutions though - targeted at businesses rather than home users.

Cheers, I use Outlook and AVG.

I might try my ISP (NTL) as I think they have some sort of spam filter.

Good idea. Many ISPs will now filter your mail for spam if you want them to but, if you do switch that option on, make sure you check what it is filtering out for at least a couple of weeks - you might find that an 'aggressive' mail filter will cut out a lot of mail that you did want to receive.

Mailwasher pro for me, cut my spam when I first got it by 96%

CheckMail