Of the albums I own:
1. Dark Side of the Moon
2. The Wall
3. Wish You Were Here
4. Saucerful of Secrets
5. Animals
6. Meddle
7. Obscured by Clouds
8. Piper At The Gates of Dawn
9. Division Bell
10. Momentary Lapse of Reason
11. Atom Heart Mother
Edited By The Fallen Hero on 1111854266
The albums I own in order of greatness... 
1. The Wall
2. Wish You Were Here
3. Dark Side of The Moon
4. Animals
5. The Final Cut
6. The Division Bell
7. More
8. Meddle
9. The Piper at the Gates of Dawn
10. A Momentary Lapse of Reason
1. Animals
2. Dark Side of the Moon
3. More
4. Piper at the Gates of Dawn
5. Wish You Were Here
6. The Wall
7. The Final Cut
8. A Saucerful of Secrets
9. Meddle
10. Obscured by Clouds
11. Ummagumma
12. Atom Heart Mother
13. The Division Bell
14. A Momentary Lapse of Reason
1. WISH YOU WERE HERE
2. Dark Side of the Moon
3. The Division Bell
4. A Momentary Lapse of Reason
5. The Final Cut
dark side of the moon animals atom heart mother wish you were here piper at the gates of dawn division bell obscured by clouds relics
1. THE WALL
2. WISH YOU WERE HERE
3. ANIMALS
4. DARK SIDE OF THE MOON
5. OBSCURED BY CLOUDS
6. THE DIVISION BELL
7. A SAUCERFUL OF SECRETS
8. THE PIPER AT THE GATES OF DAWN
9. UMMAGUMMA
Edited By animals66 on 1112837406
my modified list
1. Animals
2. WYWH
3. DSOTM
4. OBC
5. Meddle
6. Wall
7. TDB
8. PATGOD
9. Relics
10. SFOS
11. AHM
12. TFC
13. Ummugumma
14. ZPS
i still need more and AMLOR, not yet :(
Edited By rkb2023b on 1113271390
Not including live albums/compilations... they can get messy...
WYWH
Animals
DSOTM
TPATGOD
The Wall
Meddle
OBC
More
AHM
ASOS
Ummagumma
TDB
AMLOR
TFC
Imo, I wouldn't put Devision Bell or The Final Cut anywhere near the top. I haven't heard the entire albums, but the songs I've heard from those really don't live up to the standard of Pink Floyd.
Here are my choices:
1. DSOTM
2. WYWH
3. Animals
4. The Wall
5. Meddle (Particularly Echoes)
6. Ummagumma
The rest are pretty much tied for quality. All except for:
266994746638789340. The Final Cut
266994746638789341. A Momentary Lapse of Reason
266994746638789342. The Devision Bell