I love double breasted suits, but pretty much never wear mine to the office anymore as I work with clients and just don't want questions about my dress. I have a great black, pinstripe double breasted Purple label ralph lauren from when they were made by Chester Barrie (great deal at an outlet.. really great deal!). Anyway, it's still in style because it was done in a classic way and I've now worn it for almost two decades.
So my advice would be to get something that is classic enough that it won't go out of style soon, but also well made enough so that you can guarantee years of service from it with proper care.
So my advice would be to get something that is classic enough that it won't go out of style soon, but also well made enough so that you can guarantee years of service from it with proper care.