I love my maxi. I bought it years ago and then returned it and it was the one that got away. Bought it again 3 years ago at a much inflated priced but would never let it go now....its not really that big
I don’t have the classic flap in maxi but I own the 2010 zip top Blizzard flap and it is my most used Chanel bag. It’s simply the most useful because I can fit in what I need for work and a bit more.
Mine is open top, which is a little more convenient than a classic flap, i’d also advise against the double flap because that might be very heavy when full.