Hyper 212+ and coolers like the Xig Dark Knight are great values. And you need to spend substantially more for not much more cooling capacity.
At around $70 - $80, you start seeing a substantial improvement in cooling capacity.
Just to add to jsc regarding the Hyper 212+ and the Xiggy, the Hyper 212+ has a better clamping system and fan securing clips.
The Xiggy's fan is secured by rubber mounts and they don't last forever, I've been trying for 2 months to get replacements here in the USA with so far, No Joy.
Comparing the securing clamps between the 2 coolers, if you're running an AM2, AM2+, or AM3 socket, the securing clamps for the Xiggy totally suck, but the Cooler Master Hyper 212+ hold down clamps borders on genius design, allowing 90 degree heat sink positioning, with a simple clamp bracket adjustment.