I want to thank everyone who replied to my last question... I'm about an hour south of Ottawa, Ontario - hunting around for bees to start 2017. Pretty much all I can find around here is four frame nucs, pretty sure they are all deeps. I have read several books and many of them suggest to use medium boxes for brood (3 mediums instead of 2 deeps) for the ease of handling as they fill up. This might be a stupid question but I'm wondering if bees prefer deeps over mediums or vice versa. I understand that full deeps could be a bear to handle but I'm more interested in what is best for the bees (I'll worry about my back later). Thanks to everyone for their opinions!