Looking to buy my first Hummer - what should I look for (or look out for)?

[dna]

I plan to buy a h2 in the next few months. I want a mint 2003 with max 35,000 miles at $34,000 max. I know this is a tight price for this low of mileage, but they are out there. Obviously, I want as many add-ons as possible (extra chrome, dvd, tire rack on tail gate, 3rd row seat, etc) though these are not crucial to my purchase decision.

I am not too familiar with the different stock options and models that are available. I believe there is a lux version - what does this have extra over a stock unit. What other versions were available in 2003 and what they they include? Which version(s) had the moon roof?

When shopping for one of these, is there anything I should check over extra carefully? In another words, are there problems these Hummers are notorious for that I should examine extra close?

Thanks