And of course don't forget the wonderful
www.ejectorseats.co.uk
for all things related to this wonderful subject
I'm still looking for stories, contributions, suggestions etc to add to the site.
As far as comfort is concerned you have to remember that compared to days gone by, aircrew are expected to sit on the seats for much much longer. What with AAR and the like it is not uncommon to be on the seat for huge amount of time and what with advances in foams and other materials the comfort is much better. Advances in explosives and rocket thrust dynamics are also more advanced with progressive burn compounds and the like being used providing better tollerated and predictable thrust curves.
The latest Mk 16 seats have one rocket which can "alter" thrust to compensate for all weights of user and give consistent thrust across that user spectrum.
Parachute design has also allowed for better results at both low and high speed deployment which also makes for a more comfortable letdown.