I'm looking to purchase a trailer for touring New England and I am very impressed with the variety of trailers on the market now. I see from other threads that a lot of folks around here like the BOB trailers, http://www.bobtrailers.com/trailers/trailer.php?product_id=10 and I'm wondering if there are many who have been able to compare between different brands of trailers.

I think this Extrawheel trailer looks like a fine performance trailer for trails and off-road, not to mention it looks pretty cool when pitched into a turn.
http://www.extrawheel.com/index_en.php

I'm also wondering about the Nashbar trailer, which looks like a BOB clone for less than half of the money. Anyone use this thing regularly?
http://www.nashbar.com/profile.cfm?sku=18733

I'm planning on adding this trailer to my road speeder rather than buying a touring bike. How different will a trailer-loaded bike feel? Can those of you who've gone through a couple of them offer advice as to what I should be looking for?

I am all about the BOB.

Looks like the Nashbar trailer is only rated to 45lbs vs 70lbs on the B.O.B. Now I would never carry that much weight but nice to know I won't have any problems if I have to pick up a keg or something.

I found my B.O.B used for $175(used once for one weeklong trip) so you might look in the classifieds in your area.

I think that when it comes to something like this, it is best to pay a little money, and get the real deal. I regularly tow my twins in a Burley double wide. they are almost 3, and weigh in at about 80 pounds, combined. The trailer tracks beautifully, we have 100's of miles on it, with just routine maintenance. When they reduce costs, for the no-name, those savings have to come from somewhere, the welds and the bearings are a good place to start. My boys love going for bike rides. Yesterday we went to the park, 2 miles from home, played for 1 hour, had a snack, then they got in and had a nap, with I rode 18 miles (felt like 30).

Great way to get in miles.

I use a trailer to take my kid to day care when I'm on my commuter fixie.

Some weekends, I hitch to my racing bike for longer miles on the bike path - handling (with a kid-loaded trailer) behind the racing bike is a little different - you can't come into a turn with a lot of heat and expect to make it through the turn unscathed.

That said, it is super enjoyable - it enables us to go longer/faster and see more things. I suppose if I were touring (and didn't want to go the pannier route) it would be a good option.

I have a WIKE trailer. The good folks at WIKE also make a version called the "Cargo Grocery Cart" which would make a great gear hauler. The reason I like these is because they are narrow, they roll fast, and are extremely intelligently thought out without a whole lot of extraneous stuff. They build it to your specs, so you can pick and chose what you need.

http://www.wicycle.com/gcs.htm

Good luck.