Because of the cheap price of the US dollar right now, it makes a lot of sense to buy a USA-made piano. I love the Euro pianos (both of mine are), but I think at the very moment you get more piano for your money if you buy USA-made.
I had forgotten, but the other place where to look at very well priced pianos is Jim Laabs, in Wisconsin (also a sling-shot throw from Ontario).
...and by the way, Shigeru Kawai pianos, while excellent, are not less expensive than a Mason & Hamlin (which in my opinion is far better). I agree about the Boston pianos being a Kawai designed by Steinway. I find all Kawai models (new and old, although I favor the old; KG-5 and KG-6 are some of the best scales ever for their size and they are well-made) far superior to Boston, although of course if you find a Boston you love, there is no substitute for that.
Play pianos. One will speak to you and you will forget about size, price, brand and design.