Well, not exactly the same but i have a FF/dark fender who tried it. Was in the same position as you, figured it was nice to floor thier ToHit but ran 4 toggles. I tried it and i respecced out of it shortly thereafter. The -ToHIt debuff did not last long enough to turn the fight in most cases, and the drawbacks from losing my toggles was massive.
Have it on my Dark/Dark, think I've used it twice in earnest - once to hit the huge mob which was front loading the mish and had already resulted in a teamwipe - In, Fire It, Exit and recover, the other time was in of all things a 3 way Arena match but with max recovery settings its very effective.
Basically its very situational and probably not worth it - if you have lots of toggles to worry about I'd suggest skipping it is no contest.
Mind of Gaia lvl 50 Defiant's first Mind/Storm 'troller.
Deadly Doc 50 Dark/Dark Corr
and lots more on Pinnacle,Union and Defiant
My main is a dark/dark built for team support. and imo blackstar underperforms compared to other nukes, but it still is a nuke, so i took it 
If you think nuking is fun, take it. If you don't, skip it. You won't miss it. Don't use it when the team is relying primerely on you for heals and buffs, because you are right in fearing that the nuke isn't powerfull enough to warant the downtime. If a brute or dom isn't holding most of the agro it'll probably get you killed, tohit debuff or not.
@True Metal
Co-leader of Callous Crew SG. Based on Union server.
Cheers for the advice. I think I'll skip it, its seems to be far too situational to be worthwhile, and the the debuff does not seem to last long enough to justify losing all endurance (and therefore toggles) for.
Thanks again
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Good choice, Blackstar is c*r*a*p. Not worth at all loosing all your end and toggles.
I have a dark/rad cor on which i took it to try out for fun value at 47, but prolly the biggest mistakes I ever made in a build.
Life is better without. Do take the muchly underestimated Life Drain though, it's really nice. 
already took life drain, thought a self heal might be a necessity with a secondary without any heals. Plus, i tend to generate a lot of agro!
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i know this is quite old lol but what kind of damg u looking at with blackstar compared to other nukes
?
Officially numbers are same as your regular nuke I think, but believe me, in play it's a whole other experience. Stay away from it, unless you really don't know what else to choose. Especially when your toon is heavy on the toggles...
Ok I have a very fun dark/sonic corruptor at lvl 30 and I am in two minds as to whether to get Blackstar or not when I get to 32 (if I can find teams to get me there though!).
)? I'm not sure it is. So i was just wondering what the thoughts of other team orientated dark/* cors are on this power, worth taking or not? If not, what should i be taking instead?
Now, I am aware it's a pretty shonky nuke partly due to the lack of aim, if it were (for example) Dreadful Wail I would be in no dilemma, would snap it up instantly, but the bad press that Blackstar suffers from has made me unsure.
See, I know it's a fairly -tohit debuff (off the top of my hed, is it 40%?) which makes me think it could be handy as a team "Oh carp" power to floor enemies tohit, especially alongside liquify when i get that later. But is that worth flooring my endurance thereby dropping the 4 toggles i run to support the team (Assault, Tactics, the Sonic AoE res shield and the sonic AoE -res debuff - names forgotten
PS so looking forward to having a soloing spec for this toon so that i can crawl through heroic missions slightly quicker when i can't find a team!
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