I prefer mm myself but I haven't minded the Trade size since they've been larger story collections and since the Trade size is inconvenient I can generally finish a story or what ever and if I'm going someplace where I don't want to carry it just pick up an MM sized book. I start to feel uncomfortable with the announcements of novels coming out in Trade size. To me that's something that can come out in MM size but I'm paying more for a format I don't like as much. I hope that doesn't become a trend in new books. I know only two have been announced but hey, it's a slippery slope.