Well my rear wiper is working decent, of course my car is only 6 months off the lot but it spent some time on the lot as well, but I am super picky about my wipers (replaced my original front wipers with bosch icon the second day of ownership). I also rain-x my windows frequently. I researched rear 12A wipers for a upgrade over stock and it seems like the trico at advanced auto parts is the best over the counter option. I researched amazon and found the OEM Toyota 12A wiper is rated to be the best.
Genuine Toyota 85242-42030 Wiper Blade
If your on amazon and buying over $35 this is the best place to buy
http://www.amazon.com/Genuine-Toyota...a+wiper+toyota
If your looking for a single wiper purchase ebay is the best place to buy
http://www.ebay.com/itm/281509919596...%3AMEBIDX%3AIT
The rear wiper replacement is pretty easy but I'll take some pictures when it comes in the mail.