Um, you guys looked at the Vengeful Gladiator's set at all? It's phenomenal for dps, some items at least comparable to Rift Stalker. Merciless isn't nearly as good due to no hit or Ignore Armour, but if you arena a lot there's no reason whatsoever to not get full Vengeful.
Just to back up my post, here's a stat comparison of T4 versus Vengeful Gladiator's:
Gloves: +5 agi, -9 int, +19 crit rating, -6 mp/5, -18 AP, +5% multi shot damage
Legs: -6 agi, -3 hit rating, -12 int, -22 AP, +84 ignore armour, +25 crit rating
Helm: -2 agi, -5 int, +12 hit, +26 crit, -8 AP, +84 ignore armour, - 1 yellow socket, +1 red socket
Chest: +1 agi, -14 int, +12 hit, +25 crit, -32AP (lol), -6 mp/5, +84 ignore armour, -2 blue sockets, +1 red, +1 yellow socket
Shoulders: +35 agi (lol), -11 int, -3 crit, -14 AP, -5mp/5
Assuming 8 agi in red sockets, 8 crit rating in yellow sockets and 4 agi 6 stamina in blue sockets, the total stats are:
11.1% crit
432 AP
88 int = 1320 mana
2.29% hit
252 ignore armour
5.78% crit
497 AP
139 int = 2085 mana
17 mp/5
So without looking at talents, you lose 65AP, 17 mp/5 and 765 mana. You gain 5.32% crit, 2.29% hit and 252 ignore armour (~63 AP on Shade of Aran, ~40 AP on Gruul). You end up with 25 more agility, which is a plus for Survival hunters. The 5% multi damage comes to a 0.3% increase in your dps in a 1:1 multi priority rotation, though it might be more with Barrage. If the mana is really a dealbreaker for you, I guess I won't be able to persuade you otherwise, but Vengeful is a clear winner over Demon Stalker in my books.
Edited, Dec 10th 2007 6:12am by shenlongxz