I own a BD bike, and I was part of a cross-country tour which was entirely on two dozen BD bikes. No real issues, no complaints, got what was ordered.
Some minor tuning of brakes and derailleurs was desired though possibly not absolutely required (high standards.)
A lot of the wheels needed retruing after the first few hundred miles ... after that they worked well.
I just rode my 2014 BD Dawes last night ... still works wonderfully.
If you can do minor cable adjustments (and if you can't it is time to learn) and can attach stuff like pedals, handlebars , and a front wheel, you can buy a BD bike and be riding happily half an hour after it arrives.
Any decent shop will be glad to look at the wheels after several hundred miles if you find they are wobbling.