I have 2006 on my laptop and 2005 on my home PC. Making it less bloated takes a lil' work, but it's possible. First thing to do on 2006 is to
take off the Protection Center. I also stopped the Norton's firewall process as well (services.msc is a wonderful thing).
The whole reason that Systemworks is bloated in the first place is because of it's user base. It is made for people that don't know better when a pop-up asks them to install an ActiveX component in order for them to receive their free I-Pod. At least you know that by installing Systemworks, you aren't gonna download a virus (much less anything else )