Certainly the bike with the best combo of power and mileage. Even in Chennai traffic a mileage of 45-50 kmpl! And on a good enuf road, you could reach 100-110kmph without too much of a fuss. And you can comfortably maintain speeds of 80 odd without even realizing that you are going that fast! (In a splendor, 50-60 kmph feels like 90-100 kmph!). And hardly any maintenance problems - unless you make it a point to crash at regular intervals!
And besides, Fierro with an electronic start is a real comfort - especially in city traffic.
The major drawback - stability at high speeds. The length of this is much shorter compared to a CBZ or a Pulsar. Which means when you apply the brakes at above 60 kmph, unless your hand-bar is perfectly still, you are in for a spin! I once braked at 60+ kmph in mt road - and did a full 180 degree turn! Besides, you dont feel very comfortable with the control once you cross 70 kmph.
To summarize - a great bike for mileage + power. Ideal for overtaking, and short bursts of power. But to go at high speeds in traffic (with lot of braking) or in zig-zag roads- not the ideal bike!
Fyi- I’ve been using a Fierro for the past 2 years.