I have a Janome 8200 and a Bernina 740 (plus my first Bernina, a 1260, that is 25 years old and runs perfectly). I like them both but will say that Bernina is made with more precision. The Janome presser feet have more movement when sewing then Bernina. Berninas are more expensive but deliver value for the extra cost. However, I don't think you can go wrong with either one.
Every machine requires trade-offs between price, features, dealers, etc. You have to decide on your priorities.