[eray]

all that glitters is not gold.
The Mercedes A-Class may look sportier in AMG package, but the F20 is more of a driver's car. pre-LCI F20 is kinda love-hate relationship. it is rather an ugly duckling. when it first came out my initial thoughts were "who would buy such an absurd car" until I seet it in BMW dealer. The design reminded me of the good old 90s especially the rear design.
The major reason why you are unhappy with your current car might be that it is a diesel engine. You should really test drive a petrol engine F20 then you will fall in love with it.
I've driven various cars (F22 and Audi S3) after selling my F20 and I still miss my 118i.

ps: imho FWD and RWD cars should not be compared