Before the thread starts getting nasty, I am very much tempted to butt in and express my agreement with
O.F.DoubleU.
I own a 2010 Advie Gls Sport, and here is what i can say: it isn't CRDi, just pure old fashion engine tweaked with EGR and catalytic converter; has no ECU; can't do sudden overtakes like CRDi engines do; noisy engine at 100kph and beyond.
Nonetheless what i love about it is: cheap maintenance (PMS price is peanuts compared to other diesels i know of); simple engine means you won't die of stress and tension whenever an "Ondoy" class flooding comes your way; comfort level is tolerable; you don't need to worry about diesel quality (heck, i even placed well strained two liters of used veggie oil in it when my advie was still 2K km old); any mechanic of sound mind understands the 4D56; and most of all, my pamangkins love it! (over their parents' Dmaxes and Starexes)
As to speed, i observed that a car that can run 200kph can't do more than a farm tractor in heavy traffic situations, so why bother? As to fuel efficiency, the difference between CRDi vs. Naturally Aspirated Indirect Injection engines don't matter much. Two or three liter difference is not so vital when you think of the high sticker price you paid for your CRDi.
Just my two cents....