[GALADION]

Demir
As Dave stated, the Gabbiano's weight outside the water has nothing to do with its weight in the water (you can hold it straight using only your index and thumb!). It is very light and swings very fast. Same goes for the muzzle. Very light, with excellent view of the spear which makes aiming very easy.
The info you got about this gun, seem to be entirely opposite from the real facts.
Conserning Pathos, if you really like this gun I would also suggest Pathos Open. However its bouyancy, ease of swing and reliability of trigger mech, even though above average, are somewhat inferior to the Gabbiano.
A big plus of the Pathos is the type of its trigger mech which allows for an extra 5cm of band strech.
This means that a 100cm Pathos would shoot like a 105cm gun with a conventional trigger mech. It also has a full length rail and due to that a shorter spear (I didn't like this last attribute).
However, the biggest advantage of Pathos compared to Gabbiano is its lower price (I don't know the price of the new model yet but the previous one would cost about 100 euro without reel) but I wouldn't buy a gun based ONLY on the price tag.
I would also suggest you to use both guns before you buy any of them, although my heart is with the Gabby!