I rely on Keyword Discovery data. As well as Google, Overture and Wordtracker data. For me, Keyword Discovery is one of the best tools out there for keyword research but I need to finish some work right now and I cannot do pretty much anything with my current work at this current point in time and I work in an agency where every minute is counted if you have billable hours or none. I need to get work done and Keyword Discovery is down. Since lunch time today, Pacific Standard Time, up to now, it is already 6:45pm, I do not know up to when this will be like this.  Oh well, I just have to rely on Wordtracker and Overture then.