I have a very old black epi 25 speedy which I love and is as light as a feather. I recently bought a new cassis epi speedy 30 but it is so much heavier than my black 25. Is there a real weight differnce between the 25 and 30 or is it just because of the age difference between the two? I wish I had got a cassis 25 but they only had the 30. Do they even make a 25 epi speedy cassis? Thank you