Up until the Polymer series, my favorite Bank of Canada banknote used to be the $50. But so far, it turns out that the $20 bill is the prettiest banknote of the Polymer series. I also will likely enjoy the Polymer $20 more than any other bill of this series because of more frequency of prefixes, and new prefixes for up to 2 years.
The upcoming Polymer $10 bill, it doesn't seem promising at all - it's not fun to look forward to unless it's printed on paper. If it was printed on paper, new prefixes would happen more frequently. Sadly, it won't be the case anymore when 2013 rolls around. They'll probably have a vast majority of my region's $10 bills replaced within 3 months, most likely. Not to mention I probably won't care for the new $10 bill much if we end up seeing FEW through the FT*'s - mainly because the BT* prefixes happened not that long ago, and words cannot express how much I hated the overkill of BEW from 2005 to 2007. Plus I'd rather see the CD* prefixes more than anything else. BG* prefixes, if they were to appear on the $10's, it will be dull and boring because of the overkill of those prefixes when they were on the $2 bill in the early 1990s. But I have a feeling that CD* and BG* prefixes are not going to happen.
So yeah, it looks like my interest in money, as a whole, is starting to fade away.