WKO+ or RaceDay with GPS, HR, Cadence only (no powertap and no coach) - worth it?

I have a garmin 305 right now. I use a combination of training center from garmin and sporttracks and a spreadsheet I have to keep track of stuff. I am intrigued by WKO+ and RaceDay for some of the more advanced computations and analysis it does.

Do you think these are worth having without a powermeter and/or coach? In the grand scheme of things it’s not that much money. I downloaded the free trial of WKO+ and am trying to find my way around but was looking for your opinion. My future definitely holds a powertap but probably not for 6 months at this point.

As always, thanks for any and all help

give the Training Load plugin for Sporttracks a try, it does alot of what WKO does.

Ah thanks for the idea. I will give that a shot.

Other opinions?