There is a wide difference in the OM61x range, a 4 cylinder N/a vs 5cyl turbo are miles apart in terms of daily driving. It all depends on what you are looking for the car to do and where you drive and how much maintenance you want to do.

Live in the flatlands of Florida and take the car out to buy your weekly lottery ticket at the local convenience mart, a 240d would last you a lifetime. Daily commute in the major metropolis beltline...a 617 turbo would be a better option. If you drive a lot, you will need a lot of valve adjustments on the 61x engines. The OM60x engines dont require that adjustment process. All have their pros and cons, but start first with defining your specific needs/wants and find the option that best fulfills those later.

__________________
Stable Mates:
1987 300TD 310K mi (Hans)
2008 Jeep Grand Cherokee OM642 165k mi (Benzrokee)