Originally Posted by
Zuziza
Hit's a preference. If you're just starting, going for hit cap is recommended because you won't have to worry about refreshes missing. In general, haste gets us greater DPS gains, so prioritizing haste over hit means more DPS, but you're below hit cap. However, we're a DoT class; we only care about the initial cast hitting because tics of a DoT don't miss. Thus, if you're exceptionally good at noticing when your refresh miss and react very quickly to cast it again, you minimize the loss of DPS from misses and your overall DPS goes up despite being below hitcap.
It's something that's very individual, so there's no magic number below hit cap to shoot for. It's something you have to work on yourself. If you have a lot of lag and/or can't keep track of the refreshes that well, go for hit cap so it's one less thing to worry about. With those issues, you'd do higher DPS at hit cap than you would below.