Ah! You've been bitten by the truck camper bug! There's no cure for that but then most TCers I know don't want to be cured
๐1) Where do I start? - Are there particular brands/models that are better than others, pros/cons of each?
Since you're looking at used, finding a brand with good customer support is worth considering. If you find a unit you're interested in, you should consider calling the manufacturer to ask some questions and see how you're treated. I've heard many praises for Hallmark and Outfitter, even from folks who bought their unit used, but there may be others that provide good support too.
2) I own a 2003 Chevy S10, 6' bed. - Is this enough truck for a pop-up camper or would I need a full size?
You might be able to find one that will fit but, as others have said, it won't be much. Remember when you're matching camper to truck that, in addition to the camper itself, you have to allow for the weight of the stuff you'll be putting into it. This can easily add up to 500 to 1000 lbs. And don't forget to allow for your own weight and that of any pets and/or passengers. I suggest you look online at the new units first just to get an idea of what amenities you can't do without and get a feel for what the weights are on different size units. Be aware that the weights given are typically base weights which don't include the weight of options.
3) Shopping for a used camper(doubt I could afford new). - What are some things to look for? What are some things to avoid? Are there things on a camper that can't be fixed/replaced?
As stated, previous leaks with its resultant rot damage are the biggest worry. It's always more extensive than it first appears and more costly and time consuming to fix than originally thought. Look at the sealant on the seams and around any door or fixture through the wall or roof. You want to see that it is neat, with no cracks or gaps. Feel the walls, roof, floor, etc. to see if it's solid and look to see if there are any bows or ripples that could indicate rot or delamination. Open all the cabinets and drawers and look at the inside of the outer shell to check for any sign of water intrusion ... dark streaks, mold, etc. Avoid listening when a seller tells you he hauled the camper on such-and-such a truck for years with no problems ... do you're own research! Anything on any camper can be fixed or replaced but with a used camper you can quickly spend enough on repairs to negate the savings of buying used. Structural deficiencies are the hardest to fix; compartment doors, windows, appliances, and fixtures are easily replaced assuming the unit isn't so old that its hard or impossible to find the parts.
4) Reliability/longevity - Are truck campers good for a while? As stated in the previous question, I will need to buy used so I want to make sure whatever I buy will still meet my needs.
If taken care of, truck campers (like any other RV) can last for decades. Again, rot is their biggest enemy. Even campers with an aluminum frame usually have wood inside the framing tubes and, other than CampLite who don't make a popup, wood is used on the walls, ceiling, cabinets, floor, etc. Being stored under a roof when not used helps. Make sure the unit has been properly winterized as needed to maintaining the plumbing and prevent leaks.
5) Anything else? Are there things you wish you knew when you started into the truck camper world that you know now? Any experience or suggestions about anything truck camper related would be really helpful and appreciated. I have very little experience with campers in general so I apologize for my ignorance here.
Note that since you're buying used, as long as you don't overpay for a unit you can always sell it with little or no loss and find another. Go to as many dealers with truck campers as you can and look at both their new and used units. Even if you're going to go used you can get an idea of floorplans, build quality, etc, of a particular manufacturer, all of which is usually pretty consistent over the years. Another great way to see a lot of units and, even better, talk to the folks who have used them, is to attend a truck camper rally (Truck Camper Magazine has a list of upcoming rallies and there's a forum here for rallies too). Most truck camper owners are quite happy to talk about and show off their rig. You can even note the location and the truck camper brand and type of posters here in the Truck Camper forum and send those with a popup a Private Message to see if you can meet with them if you're in their area ... assuming they're not on the road enjoying their rig :B
Good luck on your search!
2008 Dodge 3500 DRW 4x4
2008 Bigfoot 25C10.4
Torklift/Fastguns/Hellwig/StableLoads