MH PvP Dagger Help

I've been collecting points with the intention of spending them on a good MH dagger. The best true PvP dagger I can get with points is the http://wotlk.openwow.com/item=48509, but the highest DPS dagger I can get is http://wotlk.openwow.com/item=50426. While is does have more dps, it doesn't have a gem slot and ap is lower. My gut tells me to go with the Relentless for res, AP and stam boost, but I'm not sure. Opinions?

I'm not a pro rgue by any chance but i think the weapon damage alone makes Heaven's Fall superior even if it costs you 44 resilience, also don't forget that Heaven's Fall has agility while the relentless dagger doesn't

Tbh the smartest thing you could do is to get Sharpened trinket