I've been tempted to get an A5 Filofax for a while now, but one thing that puts me off is a lot of people say, if you carry your Filofax around with you then A5 is probably no good. It's too heavy, not compact enough, you'll have shoulder pains, etc...
For quite a few years I've organised my life in files and folders, notebooks and planners. If I wasn't as organised as I am now, I would be very lost indeed. I think this is why an A5 appeals to me so much, it's a decent size so I can cram loads of stuff in it. I've tried the pocket size Filos and they are just way too small. The personal is quite handy but part of me wants something bigger.
Also, the price puts me off, and the obvious nature of an A5. If someone were to yoink it out of my arms they would know everything about me. That's quite unsettling really.
Hmm... think I'll stick to my personal Finsbury for now!