2.5 Diesel Turbo... the power isn't smooth & powerful like the 3.2..

Try consider the Isuzu Dmax 3.0 ITEQ, i currently owned one.. it's a 3.0 super commonrail turbodiesel 4x2 version. The power is smooth and more than enough, not to mention less turbo lag compared to lower CC model (2.5ltr).
Giving good FC compared to other brand (Triton, Navara, Hilux, Ranger etc).

But if you're looking for more power, go for Navara, it's a mothertrucker with 176PS and 406nm of torque (which is equal to a BMW M3)..

I wouldn't recommend you to get a Hilux, as it's underpowered & quite high FC like there's no tomorrow  

My suggestion : DMAX > Navara > Triton

My no-no list : Hilux

Powerful with good FC : DMAX

Powerful which will swallow most of the SUV / Truck on highway : Navara

Powerful with comfortness : Triton

Underpower, high FC with nono comfortness : Hilux

2nd hand - Vios g-spec 2006 = RM 60k
New - Persona Hi-Line 2009/Gen 2 Cps 2009 = Rm 60k

WHich one is a better choice?
I wanan downpayment Rm 20k, interest rate for vios is 3.5% and proton is 3.77%