Ultimately it comes down to what your preference is cicopo.
How we choose to post process our images varies as greatly as the method the photographer used to obtain the photo. If extra saturation is something you like, then who are we to tell you not to saturate your photos with extra colour?
As well, when it comes to prints, I'd have to ask which company you're using? Here in Canada for anything up to an 8x12 I use Blacks. For larger prints, I go with EZ Prints down in the US. Ultimately it comes down to what meets the standard you're looking for.
With regards to Vintage Wings and their show, there is one piece of advice I can give you. Generally, quality photos taken of fast moving planes that are against the treeline are very hard to obtain simply because there is too much background for the sensor to consider. I noticed this during my stay last year and as such waited for the plane to become airborne and clear of the treeline before snapping.
Here's what I mean...
Attila P.