lol been there myself, get something mental for the weekend, always sweetens it a bit
probably something like a golf, octavia, passat, jetta, 320d, audi A4 would be what id go for if it was my 5k
W203 C220 CDi. Try and get a late sports edition or avantguarde model with the leather etc.
A golf or bora etc won't come close for power, comfort and reliability. Both me and my fiancé do around 500 miles each per week and we both have one. They realistically average 45 mpg for the sports edition and I get 50mpg from my avantguarde.