Are there any Bravissimo shops near you? I'm a similar size to you and wouldn't shop anywhere else. Usually go into a cubicle with about 20 bras and only find a couple that fit properly! That's why I really think you need to try styles on.
What do you think is wrong with how the Idol is on you? What's making it less than perfect? Or is it just that it's not as aesthetically pleasing as you'd like? Are there any gaps or over spill anywhere? Is the strap/wire/band positioning comfortable?