In Olympic weightlifting there are several types of pulls. You have the traditional high pull in which you pull up high, finishing up with the body fully extended, the elbows high. This was the common technique in the 60s, 70s and 80s. It is rarely used by lifters now because it isn't in line with the modern snatch technique: this from of high pull teaches you to pull as high as possible, keeping the elbow high and extending as much as possible whereas in the modern snatch technique lifters are taught to move down as soon as they exploded upwards and they pull with the elbows back (almost trying to go THROUGH their chest). So the traditional high pull would have them practice the wrong pattern. This is why you will see many different types of high pulls... for example the Chinese actually go down as soon as they did the explosion in the pull to mimick the structure of the snatch.
NOW keep in mind that you are using high pulls TO BUILD MUSCLE not to improve your Olympic lifting. There is a difference between both goals. If you want to use the high pull to build muscle, the classic (full extension, elbows high) high pull is the best option. To improve your full snatch it isn't.