Why dont you use RAID FINDER?

[Bourne_Endeavor]

But that is the thing.. if the tool is there why dont you use it really? for me the unpredictability of getting bad players is the same, or is it not?

Not necessarily. Raid finder allows anyone who meets the minimum ilvl, which can group with multiple i340s. While ilvl doesn't inherently determine skill, I prefer people using some assortment of 350 gear to push faster. Likewise, if I happen to stumble into a good party, we can hopefully knock out a handful of runs. With RF, I may never see those people again. On the flip side, bad players can be easily ejected. A Byakko specific example often has people wanting unique jobs to utilize the tank LB3 strat. If you get two Samurai in RF, well, you won't have the LB.

Basically, Party Finder offers control over the party. When I may have to run the same fight upwards or exceeding 99 times. I want to maximize my odds as much as possible.