Windows 7 RC vs Windows Vista Sp2

I dont know why this thought came in my mind

But Can anyone compare Win 7 RC and Win Vista Sp2.

Which is better in terms of stability , security etc ?




Please forgive me , that I asked such a question.I'm Newbie in this.

Personally I find no difference in stability, and as to speed, I find little difference.
Its certainly quicker than XP, but there again I always found Vista quicker than XPPro, and again maybe thats because I built this system to suit Vista.