Hi rfe777 and welcome to sevenforums,
i think you will find that a lot of folks here will say that windows 7 has been stable and a good performer for months, even for a long time before official retail release.
there is talk of a upcoming service pack, but it doesn't look as if there will be anything much in it, just a collection of already released updates. nothing like vista...
sure some people have had trouble will their particular hardware and windows 7, and some folks haven't found it easy adjusting to the differences between the two systems, but i think it's safe to say that most users have made the switch and shudder at the thought of going back to xp.
of course, your mileage may vary
mickey says upgrade!