[quote]

whereas a 6 affix i63 ring can roll 170-200 prime stat, and still have 5 random enchantments left over.

This is incorrect. 200 prime stat is 2 rolls.

http://www.diablofans.com/topic/41045-spoiler-diablo-iii-item-affixes/#entry863934

From a DPS perspective, Hellfire will match the best Trifecta rares due to the 200 Prime Stat

**HellFire Ring**Fix Stats+200 Main Stat (fix) -> This counts as 2 affixes

+35% Experience (fix) -> Glorified Leorics

+Fireball (fix)

+4 Random Stats+6% Critical Chance (random)

+50% Critical Damage (random)

+9% Increase Attack Speed (random)

+Average Damage (random)

**v1.05 Rare Ring (6 Stats)**+200 Main Stat (fix) -> This counts as 2 affixes

+6% Critical Chance (random)

+50% Critical Damage (random)

+9% Increase Attack Speed (random)

+Average Damage (random)