Which one of these should I get? I've read a lot about all of the DLC. I can't choose between these two.
Pros and cons would be great.

The pros and cons I list might be different then other peoples:
Broken Steel:
Pros:
- contains more of the Enclave
- adds a few powerful enemies that Fallout 3 desperately needed
- Hellfire Armour
- allows you to redecorate the Citadel

Cons:
- makes your one decision at the end of Fallout 3 pointless
- post-ending gameplay(I never saw the point of this)
- raises cap to level 30(your character is already a god of the wasteland at level 20, the new level cap further unbalances the game)
- there is no way you can save the Enclave

Point Lookout:
Pros:
- large map
- interesting atmosphere
- has one of the most interesting characters of Fallout 3
- new creepy enemies
- hallucinations

Cons:
- no companions
- like Fallout 3, there is very little explanation as to how certain things happened

Point Lookout, it had a Interesting enviorment and new worldspace. It is my fav DLC, second to the Pitt.

Point Lookout.

I'd say save up just a bit more money & get the Game of the year edition

con-
costs about the same as two DLC

pro-
you get the game & all five DLC

Point Lookout. I always have a lot of fun with Desmond and the brain. Simply too funny to let it go.

Point Look out has a nice area to explore with some cool places. Broken Steel doesn't offer much it's a boring quest that ruins your decisions at the end of the game and makes things meaningless, it also breaks the story of the main quest it also has a pointless decision at the end to make which doesn't make any sense. I regretted buying Broken Steel when it first came out

Point Lookout! By far! It's the best DLC for Fallout 3.

The atmosphere in Point Lookout is even better than the main game itself, its my favorite DLC of any game.....

I only like Broken Steel for being able to play beyond the ending and its side-quests involving the water caravans.
The rest is pretty much more of the same, in my opinion. Point Lookout is fairly big and has some very nice quests
and characters. Well they're not nice, but they're interesting... Anyway, get the Pitt

Between Broken Steel and Point-Lookout?

Point Lookout for sure. Although I love Adams Air Force Base in Broken Steel and while the main questline svcks, I would recommend picking it up at some point. Adams alone is worth it IMO.

If you haven't already, I'd also highly suggest the Pitt as an alternative to both of them.

I've bought Point Lookout and don't regret it. It's looking awesome so far. I love the atmosphere.

Both

You can? O.o

Sure, you can knock down a few walls, add a few water features, etc...

Buy a copy of GOTY get all 5 DLC ?

But then he'll be spending money on Mothership Zeta...no one deserves that.

using Amazon.com to compare

the regular version of FO3 is about $10 US
the Goty version is about $20 US

so if you consider that Broken steel & Point Lookout could be worth atleast $5 each then the other DLC's could be thought of as freebies

but the fully automatic energy weapon is found in that DLC hands down the BEST energy weapon

That doesn't excuse it from being a hopefully non-canon, lore-destroying abomination; in my opinion.

Note: I'd personally say that Vengeance is hands down the best energy weapon.

Broken Steel. Mainly because it continues the main quest. Point Lookout is awesome, but I would give Broken Steel priority. I have both myself. In fact, I have all except MZ.