I got me one, looked at its specs, Internals and Visuals.
Then I decided it simply only looks good. And noone seems to like it (due to performance).
Then... I decided to pick up a challenge : pick a Ship with no visible purpose and very limited Internals - and transform it into an Exploration vessel
For added challenge, take it into Livery
and install a COVAS in a foreign language.
Take Maksim COVAS for example (it's free) - and combined with the Mamba's unique Visuals you'll find yourself flying some Russian prototype spaceship called "FireFox" noone remembers how or where you got it from, including you.
But you got it and now you're flying it xD
Seriously, try it - it's surprisingly fun
PS.
Engineering is still in progress, but it already sits at 31LY Jumprange.