I got two Toyo 810G monorails off ebay a few years ago, when studio photogs were running towards digital capture. But they are arguably "a bit" awkward in the field - think 70 lb backpack.
I also have an 8x10 Gandolfi Variant in walnut, great camera although only double extension. I smashed it up a bit in a storm in Australia (the center filter for the 150XL took the brunt of the fall onto granite) so I need to ask Gandolfi to rebuild it.
My first 8x10 was a Wisner Pocket Expedition. It was superlight but way too flimsy, I returned it after a week.
Keep in mind that stability requirements when stepping up from 4x5 to 8x10 are far more than a factor of two, I'd say 10x if you want to take advantage of the film real estate. Not so much of an issue when contact printing though.
Other options:
If you can find a used Toyo 810M metal field for a good price then that's a great field camera a little heavy but built like a tank.
Shen Hao makes good cameras that are a great value.
Don't even look at Ebony unless you want to take out another morgage, Ebony cameras will seduce you. Just don't.
Other brands for new field cameras: Canham, Seagull (same as Shen Hao), Chamonix (not sure if they make an 8x10), Tachihara, Walker. Linhof and Arca-Swiss of course.
Some outlets:
US: Badger Graphic
http://www.badgergraphic.com great prices and service.
England: Robert White
http://www.robertwhite.co.uk great prices very knowledgeable and a joy to do business with.
It all depends on how you will use the camera and what your priorities are - weight, portability, cost, technical flexibility, setup speed (relatively speaking hehe) and convenience.
I hope this helps please feel free to ask more specific questions.
And don't forget the option of using hybrid processes and digital negatives to do contact printing. Jim Collum has done a great deal of that. You could for example use a 4x5 camera, scan and print to an 11x14 digital negative and do a platinum print from that. It takes a little extra work but it's a very enjoyable process with very personal results, truly a craft.
Lars