Yeah my thread question was about analysing human games. My own and some low-end and club games - for the purposes of learning, but also in just the enjoyment as a scholastic exercise.

As Uly, notes I have more than enough engines with Houdini 2.0b, Komodo 3 and Rybka 4.1... I wanted to get a mix ...

Wow, I really have kicked off something here

Looking at peoples constructive comments and otherwise, have amended my list of engine choice to being

Houdini 2 very, very stong tactically a bit pessimistic
[3022] if theres something to be found in a tactical position
houdini will usually find it ...

I have read on various forums that engines have different styles for analysis purposes... aggressive, positional play, draw-ish etc. etc.
So effectively people have a mix of chess engines to represent "human personalities" and will mix engine choice depending upon either the desired outcome or to ...