NON-barrel-aged RIS's

Founders Imperial Stout would be the obvious missing choice from your list. Awesome beer.

Imperial Biscotti Break is another fantastic one. But although not barrel-aged, it has a few other things thrown in there, so maybe not as "pure" as you're looking for. Same with Mexican Cake etc.

 

CCB Marshal Zhukov.

 

Founders RIS is probably my favorite non BA RIS. Highly recommend.

 

Old Rasspy
D.O.R.I.S. The Destroyer
Narwhal

 

Samuel Smith's is still my favorite. It's my favorite Stout overall, and still one of my top beers.

 

Founder's Imperial
Olde Hickory Imperial Stout

 

Alesmith's Speedway Stout
Port Brewing's Santa's Little Helper

 

Other than what's been mentioned, and excluding beers that contain a ton of adjuncts, I'll throw my hat in for Courage Russian Imperial Stout, just a knockout beer.

Others I'll nominate:
Smuttynose Imperial Stout
Thirsty Dog Siberian Night
Otter Creek RIS
B.O.R.I.S. The Crusher
NEBCO Imperial Stout Trooper

Of the ones already mentioned, nothing beats Founders Imperial Stout in terms of non BA stouts. Just straight up baller stuff right. there.

 

I would add Yeti to that list.

 

Stone and BORIS are both great. If you like one with more hops, normal 'ol Yeti is great. Storm King is similar. Ten Fidy is a little more roasty (but not as much as it once was) if you like that note. Founder's is great all around.
While I'm not a giant fan of it, Old Rasputin wins the $ for oz award by a mile.

 

Yes. Often an old standard is the best choice.

Old Rasputin
Old Rasputin
Old Rasputin

 

Stone RIS
Old Rasputin (all time favorite non-BA RIS)
Thirsty Dog Siberian Night
Clown Shoes Blaecorn Unidragon

and let us not forget, although I'm not entirely sure you would classify it as a RIS rather than just an imp. stout, Great Divide Yeti (and all it's variations).

 

Are we talking about Imperial Stouts in general or only Russian Imperial Stouts? I know the line is blurred, but it still seems like an important distinction. This site, after all, makes the distinction between American Double/Imperial Stout and Russian Imperial Stout.

 

Founders Imperial Stout
Lawson's Fayston Maple Stout

 

Pretty Things Barbapapa

 

Great Lakes Blackout Stout, look forward to it every year!

 

What he said! TWICE!

 

Darkness is my all-time favorite too, so good choice!

As others have mentioned, Founders Imperial Stout is awesome (my favorite of their stouts, actually), and probably my 2nd fave all-time. I actually really like Dark Lord, as well (it's up their with Darkness in terms of complexity), but it's a little too sweet to be #1 for me.

Stone is great, Ten Fidy is great...I think Abraxas is probably up there in the top 5 for me, as well. I don't tend to like stouts with much coffee in them, but Abraxas has a lot going on to distract from the coffee. I would take a look at Brooklyn's Black Chocolate Stout and Boulevard's Dark Truth stout as well; they're a great deal for what you get.

 

I too prefer RISs without being barrel aged. I love bourbon and find when I am tasting a Barrel Aged Stout I want either just the bourbon or just the beer. Don't get me wrong, beers like BCBS and KBS are absolutely delicious, but it's rare that I'd spend any money on them.

For a quality Imperial Stout that's not barrel aged look to Stone's RIS, Oskar Blue Ten Fiddy, Victory Storm King (hoppy one, if that's your thing), and Old Rasputin. Sam Smith's does an Imperial Stout that I am yet to try. I wager it's quite tasty.