Think I got about same number of legendaries from trash as from elite packs, so skipping trash and going for elites is a complete waste of time, besides you dont get alot of XP from that.
I can skip trash with my gear but as I said I'm not doing it, you can check gear here: http://www.diabloprogress.com/hero/n0c0-2424/Noco/1627921
Is it just me being unlucky, cause i can do those exp/legendary runs, that was posted in this forum or w.e in like 15-20minutes on mp2, ive barely gotten any legendaries. While my friend on the other hand, barb, runs all of act 3 in 50minutes, only fighting elite packs and skipping trash, hes been finding more legendaries than me.
Also, ive never gotten a legendary off a white mob, its usually off gob or a pack ):
I have a 77k unbuffed DPS monk and transferred that gear to my dh and bought a cheap 1300+ dps 2h crossbow with lifesteal, socket and loh 600+ and a cheap quiver. My dh does 129k unbuffed dps with all the perks of my monk gear (resists, vitality). I was able to kill any type of elite pack on MP6 but it was not time efficient. MP5 went faster but MP4 seemed the fastest while still maintaining a decent amount of MF from MP4.
My DH had ~ 40k HP, and 600-700 resists. Combined with lifesteal/loh and smokescreen, reflect damage was no problem.