I'm looking for a nice pair of headphones, with a lot of bass. I currently have a pair of Sennheiser HD518, which have amazing sound quality and clarity but are lacking "powerful' bass. I know everybody here hates beats with passion, but I'm talking about the 2013 studios which I've heard don't...

Where would you find the Takstar Pro 80 for $50, because on amazon they are $115 (I live in Canada)

What about Audio Techinca Ath m-50? I heard they are "the best for under 200".

I am looking to buy  a good pair of headphones, I know that the Studios are a lot more expensive but they are currently on sale for the same price at best buy. I do care about style, but I care about sound quality more.