It really doesn't matter much which brand you buy, as long as the bike has the right components. A Trek bike, say, has a frame and maybe a fork made by Trek, but the shifters, gears, brakes, cranks, etc. are standard parts made by some other company like Shimano. What you really want to know is, which features matter and which don't, and why.
Some good touring bikes at or near $1,000:
+ Bianchi "Volpe" ($1,100)
+ Cannondale "Touring 2" ($1,440)
+ Fuji "Touring" ($1,100)
+ Raleigh "Sojourn" ($1,200)
+ Surly "Long Haul Trucker" ($1,100)
+ Trek "520" ($1,100)
A touring bike looks very much like a racing bike with a luggage rack. The difference is in which components are selected, and why.
What you want on the bike (encoded in bicycle nerd-speak):
1. Wheels with 36 spokes laced in a "cross 3" pattern
2. Triple crankset
3. 8- or 9-speed cassette with a 32- or 34-tooth cog
What you'll (probably) replace on your new bike (yikes!):
4. Tires (700x28 or 32 on a road bike, 700x35 or 32 on a hybrid)
5. Seat (like buying a pair of dress shoes that don't pinch your feet)
What doesn't matter:
6. Frame material
7. Component group ("Sora", "Tiagra", "105", etc.)
Here's why (short answers):
1. Strong wheels won't break on the road
2. Hills are hard, particularly when you're carrying cargo
3. Strong wheels won't break on the road (hah! not what you thought)
4. A sore butt spoils the fun.
5. A sore butt spoils the fun.
6. Carbon's too expensive, and steel is rare (exc. on touring bikes).
7. Saving four ounces of weight or 0.1 second faster shifting just doesn't matter unless you're racing (or stylish).
The distance you're gonna ride each day is much more relevant than the total distance you're gonna ride. If this is a guided/group trip of less than 50 miles a day, pretty much any modern hybrid or road bike will do. Speed isn't a factor; you're not likely to average more than 16 mph. Hills *are* a factor, and the lower gearing of a hybrid could make it a better choice than a road bike, particularly if you're carrying cargo.
You can tune any road bike for touring by switching to fatter tires and to a rear cassette with the largest rear cog that the derailleur can handle. You could even buy new wheels with more spokes to replace the 24-spoke radially laced wheels on your fancy racer, but better to start with a bike that's closer to what you really need.
Things to ask at the bike shop:
1. How many spokes on the rear wheel? front wheel?
2. What's the largest cog (rear gear) that this bike can shift? (This may be larger than the largest cog that's on the cassette that comes with the bike. Make sure that Mr. Bike understands that you want to know how big it could be, not how big it is now.)
3. What's the largest tire that can be mounted on these rims?
4. Do you have any new/old stock (NOS) bikes like this one? (a new bike, but last year's model)
4. Can I take this bike for a test ride?
Hybrid vs road bike.
Hybrids are geared lower than road bikes, which makes it easier to ride up a hill. The disadvantage of a hybrid is that there are fewer ways to grip straight hybrid handlebars than to grip the curly handlebars of a road bike, so your hands tend to fall asleep on longer rides. As you ride more, your legs become stronger and you put less of your weight on your hands, but it's always an issue, even on a road bike.
Hybrids are also heavier than road bikes, but mostly because road bikes eliminate things like spokes, which make the bike more likely to break down while you're on the road. The Fuji Touring, which is designed for, well, touring, is only 3 pounds lighter than my Bianchi hybrid. That's three 16-oz water bottles full of, well, water.
Hybrid wheels are wider than road bike wheels, and almost all ship with 36-spoke wheels, which means lots of strength for carrying you and your luggage over potholes and scarified road. (No, the road isn't afraid of you. Look it up.)
Personally, I think a hybrid is fine for daily rides of less than 80 miles. Unless, that is, you expect a lot of wind. There's just no way to hunker down out of the wind on a hybrid.
What you want on the bike (long answers):
1. Wheels with 32 or 36 spokes laced in a "cross 3" pattern. A broken spoke is the most likely failure out on the road (except for a punctured tire), so no 24-spoke wheels or radial spoke patterns. (Ask in your LBS to see examples of these.) Buy a couple of extra spokes and a spoke wrench for the trip (unless someone else in your group will have tools & know-how).
2. A triple crankset (that is, three front gears), unless you're touring Kansas. Don't be talked into a "compact crankset", which is a double crankset (two front gears) with an extra-small small gear. The smallest "granny gear" is a great help getting up hills, particularly if you're carrying cargo. At 13 you're muscles aren't as big or strong as they will be at 20, which makes that third gear all the more important