Since your buying used?
Might as well get the dynamique price wont be much different used.
New its a lot cheaper to get the dynamique bits on the car than regret it afterward.
I made a concious decision to buy an expression cos there was a special offer and I knew I would be upgrading the alloys so decided to use the money saved for that and some aftermarket lights.
What did I miss out on (megane) that I miss not having:.
cruise control,height adjustable passenger seat.
Got rear parking sensors and met paint included on the espression (deal).
What other things are different on the Megane Dynamique.. Built in sat nav, leather steering wheel,Eq traction control,dual level climate control.
few other bits n pieces.
Me Id go for a "privelige " the next level up if buying used..Auto mirrors,lights,wipers luxury seats etc.
Course that just adds to things that might give trouble,but can allways disconnect the "auto" bit