[spaghetti]

I've had a Comanche 60 and a 75, plus a T20 90 and 110. Hard to tell what's best: they're both good guns, solid, light and accurate.
The T20 has more mass, so in theory it's slightly more accurate (but then it's up to you to aim right!), while the Cressi is slightly smaller so in theory slightly easier to track. A plus for the T20 is in accessories: if you decide to put a reel on an Omer T20, the Omer reels are definitely far much better, while the Cressi reel is a piece of crap in comparison.
Best thing would be if you could go to the shop and try to hold them: the best one for you is the one whose handle fits better with your hands. (T20 has a big handle, Comanche has a small handle).