Well for outbound protection the windows firewall is to awkward to bother with and i find my browsing speed is improved and more secure with outpost, the windows defragmenter is absolute rubbish imo, a scan with defraggler straight after the windows defrag showed an additional 17% defragmentation and another plus is the defrag time is only a third of what windows defrag is and defraggler also has boot time defrag.
Im amazed that people with windows 7 think that because they have the latest operating system it has the best built in features (rubbish)some good features yes but alot of them are far to be desired and there are several programs out there that i know of that vastly improve on on some of the windows 7 programs.