Jeff H,
I spent the last several months going through the same search you are, ended up buying a used Bigfoot to avoid the horrible depreciation that you suffer buying a new truck camper. A loaded one with generator and all will be pushing $28K on up, and in the first year you can lose up to 40%. The better rated units will only take a 20-25% hit but that's still a lot.
One of the biggest Lance dealers around is right down the road from us, so I had a chance to look them over very thoroughly. I was most impressed with the 1030 / 1130 series, prefer the 1030 because it had no slideout. I am leery of slideouts as another source of leak problems since a truck camper flexes so much in use.
Construction quality of the Lance seemed to be very good, and I liked the aluminum "walk on, sit on with lawn chair" roof, they are pretty sturdy. Can be tough to seal vents and stuff to the aluminum though so you have to watch 'em. The Lance is wood framed, as is the Arctic Fox truck camper. After comparing the two of them, I was more impressed with the Arctic Fox overall construction and fit/finish detail. Very nice, very heavy camper that should hold up well and last a long time. In fact, I would probably have purchased a new Arctic Fox last spring if I could have found one without a slideout.
Being leery of the wood frame though in something that costs so much money, I drove down to Pflugerville and spent some time looking at the Alpenlites (aluminum frame). I really liked their layouts and features, but the build quality of the ones I looked at was very poor - lots of exposed staples, shoddy looking welds, you name it. I posted about this on Open Roads or IRV2, also took some digital video that I transferred to DVD so I could compare the Alpenlites with a Bigfoot 2500 10. 6 - no contest, the Bigfoot build quality was WAY superior. (I made the videos because after looking at a few they all run together in the memory

)
General thoughts on truck campers:
- Basement models are TALL in your truck, with AC can be 11. 5' or higher... watch out for trees
- Good electric jacks are critical
- Best feature of truck camper is ability to boondock and camp wherever, so big holding tanks and a generator are a big plus
- If you want an over-dinette bunk bed, slideout models pretty well shoot you down except Arctic Fox. Lance bunks are decent size for a kiddo, but the Alpenlites are so close to the ceiling that even a small kid can't lay on their side in it or roll over.
- Fantastic fan is a must, really worthwhile for the $$$
- LP generator costs big $$$$ but saves a lot of hassle, no extra fuel cans to worry about, "hit button and go"
- Be sure you get a 3-way fridge
- The good campers are HEAVY. A 10-footer can easily exceed 4,000 pounds and some of the biggest ones are in range of 5,000 pounds. Overloading is therefore a big issue for liability, handling, truck longevity
- Good shocks (Rancho 9000 or Bilstein) will make driving and handling a lot more pleasant
- Be careful loading / unloading the beast, when it is raised up high on the jacks it is an ungainly package and failure of a jack or bracket could make it tip. When off the truck, keep it lowered as far as possible.
Good luck with your purchase, regardless what you buy you'll love using a truck camper!