Bikey friends: talk me out of getting this used Brompton folding bike to replace my stolen bike. It's a 2016 M6L from the Clever Cycles rental stock, on sale for $1349 down from the normal price of $1812. It has the Dynamo hub already built in. It seems like a really good deal, and from everything I've heard, Bromptons are the best by far, despite being way more expensive.
What Martina said. That'd be a good max carrying capacity/versatility for little storage space. Doesn't Lillian have a trailer? Bromptons are really nice bikes, but if I were serious about a folder I'd also consider a Bike Friday. They don't fold quite as small, but still pretty compact, good for touring, and ride pretty "normal" for a folder. You can often find lightly used ones or display models in their showroom. For me I think it'd come to pure urban bike (Brompton) vs slightly more all arounder (Friday).
If you want a brompton then this is a great deal. Nice color too. It would also fold conveniently to fit in your apartment and prevent theft issues. Now if you need a touring bike then this isn't a smart choice. N+2?
I heard something like this is quite amazing for the portability factor. You can just take it inside everywhere you go, and a thief would have to pry it from your cold dead hands. http://amzn.to/2h11sSB
I'm getting one of these soon in the clear/naked paint. Only issue is that they don't handle like a real bike, but nothing a person can't get used to. I probably wouldn't use one for touring, but I know people do it anyway and it's fine.