Can't decide whether to go with the flare or the straight leg? (call me cynical but everyone knows the fashion industry changes it up every couple of seasons to promote sales of the new trend).Here's your answer, buy the flare (or use a pair thats been sitting at the bottom of your wardrobe) and attach some zips like so. Wear them as flared and zip down to skinny leg according to your mood.
Image: Stockholm Streetstyle
This slightly reminds me of when I was much younger and I took all my jeans in at the leg when the switch from bootleg to skinny happened...Why buy when you can DIY?