I do have to frequently check my spam folders and mark some emails as 'safe'. This is more down to the AV software I have which flags up some emails as potential spam.

As for messages flagged as 'Spam' which come through, these are quite often genuine spam and get treated as such.

What I do like, and something that Gmail handles differently, is that I can pick up the messages with different rules in my client an shuffle them to different folders automatically.

With Gmail you need to set up the rules on-line.

In the past I found that there was a limit to the number of rules you could set and this has been an issue for me.

Sure it can be a pain entering all the rules, but with the right knowledge, you can copy them on to a new computer.