I love the speedy b 30, it really is the perfect size IMO! I had the 35b for a short period & got rid of it, I feel the 30 works wonderful as an everyday with a purse organizer & for times I need more room I use it without the organizer & voila
I have owned all sizes, and to me the 30 is a little too small for me. But, I'm also 5' 11"... I think its a personal preference My current collection is a 40, 35 and 25. The 25 is ridiculously small on me, but its the LE Cerises and I just can't let it go I love it too much! I use it as my 'Friday' bag. Otherwise I'm constantly using the 35 and 40.
I love my DE speedy! Looks as new as the day I bought it years ago. I agree, the organizer is essential. I got my organizer for my speedy and now carry it in all my bags.