Suggestions for the best stock android phone to get?

So after the reveal of Android L I'm left wondering what phone would be suit it. Obviously the stock Android L rom should be unchanged, like the Nexus line of devices. Getting anything else would just be worthless in my opinion. I'm also looking for a phone that would receive updates constantly, like the Nexus line of devices.

Unfortunately it seems like the Nexus line of devices is coming to an end with no direct replacement in sight. So I'm left wondering what would be the next best alternative. The play edition devices like the galaxy s and htc one are not available in Canada.

Without have to install a custom rom and preferably for a low off contract price is there any phone that anyone could recommend to fit the needs described above?