I think my decision is about to get harder

I had an interview with L3 Communications/Titan Group today (formerly LinCom) and they're working really hard at getting me to consider them over Lockheed. They have a long reputation for technical excellence and their simulation program is the NASA standard now. They're also building the Constellation simulation and training lab, so I would still get to work on CEV. L3 also lets them continue to operate more like a small business than a subsidiary of the seventh largest government contractor, so everyone seems to absolutely love working there.

The fact that I was invited for a personal interview means that I'm on their very short list of candidates. Their engineering manager told me that he thinks I would be very well suited to join their "work family" and he expects to fit me with a team and give me an offer within a week or so. And I made it clear before I walked in the door that Lockheed has an offer pending, so... here it goes.

I'm torn because Lockheed is offering me the exact job that I want, but L3/Titan has the ideal work environment. Most of the guys I talked with today are former Lockheed, Boeing, etc. people who wanted to get out of the big corporate style and work for a smaller organization with more of a focus on excellence than on just making money.

But the Lockheed Martin team I interviewed with seems to be largely made up of the same kind of people as I met today... so, it's tough. I honestly didn't expect to find myself in a position where I would have to choose like this.