From reading websites, it has been noted that British tailoring is a slimmer cut than typical US. Do some manufacturers have more relaxed or fuller cut coats as opposed to others? Specifically I would want a jacket with roomy arm holes, sufficient chest and biceps room. I do see piper flex jackets which have stretch, but at the same time are noted to be cut high in the arm which for me would the opposite of what I require. Thanks for input. I am on a budget so a truly custom garment is not what I am looking for.