Get the Krait. You might end up like me and never want to fly another ship 99% of the time.
A 'hidden' feature of the Krait seems to be the boost function. It is more efficient on the Krait. 1 pip or 1.5 and you can keep reboosting continously. That 1 pip extra is handy for guns or shields in combat.
See this table--->
https://elite-dangerous.fandom.com/wiki/Boost_Speed
At 14MJ, the Krait with its huge (for medium ship) distributor handles it easily. A Vulture which is a small ship with smaller distributor, needs 16MJ, a python with same sized distributor as the Krait needs 23MJ (you can boost in a Krait with a 1D dist! A python needs a 3D!). All else equal, the boost speed of the Krait also exceeds the Python.
The bad is of course you can get too boost happy like me and tend to
boost into into solid objects use kinetic braking. Thats why I fly with a Bi-Weave.