Brit frames used to be a pretty good deal, but then the dollar dropped. I think they're roughly equivalent, pricewise now.

I really like Rivendell. But the Rambouillet has been discontinued. I think you
get more bang for your buck with Gunnar or Waterford. Besides, Waterford makes (or used to make) a lot of Rivendell's frames. The new frame is the Sam Hillborne which is a bit beefy for a light kid that wants a lite tourer.
And the frame will cost as much as a Gunnar.