Having just returned from a visit to the Czech Republic (beautiful country btw) I think we need to put things into perspective:Pros:
Good variety of static content.
Display line over countryside at 90 degrees to the active runway.
Mostly shooting into the sun during the rather distant flying displays.
Ground display (artillery/tanks) going on at the same time as aerial displays.
A very long trek around the airfield to get into the event.
As for the RAF vs Czech airshow attendance debate, bear in mind that the Czech AF is going through the same rounds of cost-cutting as the RAF e.g. all of the Mi-24's are reputedly up for sale. Also bear in mind that both the Red Arrows and the Typhoons failed to show, the former given as family issues with one of the team members that is fully understandable but no explanation given for the latter. Also both the King Air and Tucano displayed to ELO's 'Mr Blue Sky' that I think puzzled the locals a little who quite rightly questioned whether they'd spoken to each other before choosing their music!
To sum up, I think CIAF at Hradec-Kralove is a better event that has the bonus of the sun being behind you during the display and some great scenery in the background with the display acts being much closer.
Photos to follow when I get time.