Kubios HRV analysis

I wanted to repost the link to Kubios, Finish University website posted by Canadian coach Derek Hansen at Charlie Francis' forum. User guide is also available here and I guess it provides some good info on HRV.

I plan getting a Suunto or Polar watch myself and play with it a little. Although I am wondering is there any need to do it. How much info do we actually need to track immediate training effects? Can we get into paralysis by analysis with too much of data? We need to simplify the things, and not brag with how much info we collect. Can 'less is more' be applied to monitoring of training? Aaron Schwenzfeier recently wrote about similar issue on his blog.