Though I disagree with you Cheshirecatman when saying that weight limits crew weight (the Taipan 5.7 uses NONE of the so called exotic materials, it still weighs in under 150 kgs, and is was originally targeted at crew weight <150 kgs), that was not the point with this thread. This thread startet out specifically pointing out that weight not was a parameter that could be discussed, that's exactely why I took the F18 as an example!
Start your own thread if weight is what you want to discuss.