Where i am diesel is $.30 more than premium. Considering i bought my 35D used and it was cheaper than the equivalent 35I at the time i think i made off well. I get 20% more economy for around a 10% more cost in fuel plus that delicious torque.
I do agree about fuel pumps though, diesel ones are often nasty. I'm one of the few who likes the diesel clattering though i bet.