Any sword ever made is a result of a series of compromises that depends on the application and the characteristics of that sword. Technology and talent of the craftsmen at that time had a great effect on the design of sword. There are tradeoffs every time a sword design must place one characteristic above another.
Studying ancient history of different cultures indicates that straight blades and curved blades coexisted, with neither replacing the other. They had different strengths and preferred uses, but one is not always better than the other.
However my personal preference based on both design and technical versatility is Shamshir. Style of the period 1650-1750.
The Shamshir originated in Persia(Iran) and spread throughout the former Ottoman Empire and beyond into India and even the Philippines. Its strongly curved blade was enduringly popular and absolutely ideal for delivering a devastating cutting stroke. And, contrary to popular belief, it was very effective at delivering rising, descending and hooking style thrusts! The off axis pommel of shamshirs produces the centrifugal force which helps with the swing moves to flow with high maneuverability, characteristic that makes this weapon the most suitable for double handed use.
Arash Karpur worked and trained with head coach Maestro Antonio Signorello (former Italian Olympic Team Coach). Responsibilities include organizing, managing and coaching the cadet team as well as private / one-on-one lessons. University of New South Wales foil coach. Responsibilities are organizing and planning the training scheme for the trainees, group lessons and private /one-on-one lessons. Selector and manager of the UNSWFC representative team for Australian University Games (AUG)