This was an excellent year for vinyl enthusists-cheers. For music and sound quality, what are your favorite LP's either obtained or issued in 2011? Some of mine are:
Bon Iver
Swell Season...
Albeniz Suite Espanola 45 rpm and Eric Clapton Unplugged 33 rpm. I like the music and the sonic quality is first rate.
My favorites have been:

Dawes; Nothing is Wrong. (nicely recorded onto two 45 rpm 10" records).

Bright Eyes; The Peoples Key, (deluxe version).

Mumford & Sons; Sigh no more.
Luke Bryan "Tailgates and Tanlines"
You might also want to try This Thread for a few more suggestions on the same topic without the limitation of vinyl as the medium. There are plenty of the suggestions that are available in vinyl, I suspect.
Here are two that caught my eye in a thrift shop box and then my ears:

Gershwin Live - Michael Tilson Thomas and Sarah Vaughn
The Peacocks - Stan Getz Presents Jimmie Rowles

Both have excellent music recorded and pressed beautifully.
Wilco - The Whole Love
Tom Waits - Bad As Me
The Twilight Singers "Dynamite Steps"

Ryan Adams "Ashes and Fire"
I've bought maybe 40 to 50 lp's this year and the same number of c.d.'s, along with my subscription to Music Matters Blue Note 45 rpm re-issues, with my favourite being Art Blakey - 'Like Someone In Love'.
I'm thinking that the Frank Sinatra on MoFi were the best re-issues, especially 'At the Sands'.
Dianne Krall, 'Doing All Right - in Concert' was the best live recording.
Merle Haggard, 'I am what I am' best all new release.
Most disappointing new release, Madeleine Peyroux 'Standing on the Rooftop'.
I managed at last to get a couple of Ali Farka Toure & Toumani Diabate recordings on vinyl, which complement their c.d. releases, especial mention is 'Heart of the Moon' if you can find a copy - African Blues at it's best.
I got some great stuff this year, including

MoFi/Reprise "Sinatra at the Sands"
MoFi/Reprise "Sinatra's Sinatra"
Speakers Corner/Impulse "Johnny Hartford and John Coltrane"
Speakers Corner/Verve "Getz Gilberto"
200g Classic Records/Mercury "Balalaika Favorites"
200g Classic/Everest 35mm "Pines/Fountains of Rome"
200g Classic/Chess "Muddy Waters Folk Singer"
180g Classic John Lee Hooker "The Healer"
Analogue Productions/RCA Living Stereo 2x45 version of "The Power of the Orchestra" (Pictures at an Exhibition and Night on Bald Mountain). This is the best orchestral record I have, period.
MoFi/Mercury Rod Stewart: "Every Picture Tells a Story"
Half-speed mastered LP version of Gary Burton/Chick Corea/Pat Metheny "Like Minds"
At a used record bin at an antique pavilion I got several great-sounding records at about $1 each, including Bonnie Raitt's "Nick of Time" and "Paul Simon's There Goes Rhymin' Simon."
I got Dick Hyman Age of Swing 45 rpm and some good sounding 33's for a buck or two at my local record store.
Echoing some already named:
Bon Iver - For Emma Forever
The National - High Violet
Decemberists - The King is Dead
Beach House - Teen Dream
Grizzly Bear - Vekatimest
Deerhunter - Halcyon Digest
Radiohead - King of Limbs
Vampire Weekend - Contra
Yo La Tengo - Popular Songs

Not all new in 2011 but very high quality and new to me!
Destroyer Kaputt , the antithesis of the name, 80s electronic at its best, great song writing. Also MGMT congratulations , awesome.