It depends on what your focus is.

For pvp, you will need to spam, or your target will move out of range fairly quickly.
The circling of the target effect, is a huge boost for pvp play, as half your melee should be behind the target at all times; so some of your toons can ignore the targets dodge, parry and block.

For pve, all you need to worry about, is getting to the target when its out of range of your melee. Once you have closed the distance, most targets will not move around much.