If the OP decides that Kobo Aura is the one, I suggest the OP buy it from Indigo. It is running a Black Friday promotion right now. Apart from a CND $40 discount, Indigo is also giving a sleep cover worth of $39.99 away for free (with each Kobo Aura purchased, of course)
http://www.chapters.indigo.ca/black-...ding-fwss%3aa1
It is hard to beat such a deal. My PRS-T1 is unfortunately still going strong. So I don't have any excuse to buy a new one. Dang!