They need different carters, and different exaust,s to performe at best.
On a standard tuned carter the 43DR runs about 70km to 80 at best.
And it wil only cost you 75,- euro,s
The 46polinie needs a speed engine($$$$$$) or a evo engine($$$$$$$$$$$$$).
and wil run 80km with a good exaust.
Bit more power at low rpm.
The DR 43 is a ferry good cilinder,and lasts forever.
The 46mm polinie is also good, but has a piston that wil sometime,s crack.
I would take te DR43MM for its power, price, and durability.
And take the 46 polinie for its power and potential, fore if you tune it well, it can become realy fast.