I have to agree with all that Whoops says. Like Whoops I am an A320 captain, and like him I am looking to jump ship in the not too distant future!
There is no career progression in Monarch and if you are unfortunate enough to be offered the A320, you will be stuck on that for ever! (Yes there is the carrot of long haul on the A330, however you possibly won't be on it very long before promotion and then it's back to the A320 / A321 only and 900 hours a year of Alicante!)