Traxor, this one's for you...
As for everyone else with intelligence, keep posting away with your questions/feedback.
As far as Blackened Band goes, some guildies wear it, and the proc DPS doesn't do a whole heck of a lot these days like it used to (highest hit is ~7k), but still adds around 100-200 dps. Which is better than most procs by a long shot. Ignoring both the Najena clicky and the BBoD proc, BBoD is better stats for raw DPS anyway (5 crit 125 spell damage, vs 4 crit 60 spell damage).
Especially in the case of BBoD, if the procs decide to happen real early in the fight (where they will do the least damage) and you get no procs later in the fight, it's DPS will be significantly lower. That's true with just about any proc, but even moreso with BBoD's proc.
In the end I think both are acceptable rings, with edge probably going to BBoD. Though for really short fights (10 to 20 seconds), Najena's clicky trumps all if you can get your biggest hitters off within the 10 second span (Master Strike, Bewilderment, Winds of Velious, Fiery Annihilation), in my opinion.
I don't plan on taking off Ring of Blood and Rage anytime soon either. 3 crit bonus,
plus Transposition proc, is next to impossible to replace.