In light of Koodo's recent Tab restructuring, I wouldn't mind seeing more high-end devices in its lineup. Here are some suggestions: Nokia Lumia 925: http://www.gsmarena.com/nokia_lumia_925-5451.php
or Nokia Lumia 1020: http://www.gsmarena.com/nokia_lumia_1020-5506.php
LG G2: http://www.gsmarena.com/lg_g2-5543.php
Sony Xperia Z: http://www.gsmarena.com/sony_xperia_z-5204.php
HTC One: http://www.gsmarena.com/htc_one-5313.php
Huawei Ascend P6: http://www.gsmarena.com/huawei_ascend_p6-5467.php
I omitted the Moto X because of the Rogers exclusivity deal.