I have several pairs of these and find they give the hand-positions I want with the controls ideally placed. I use them with the open ends facing forward:
Humpert AHS Basic Sport Handlebars - £35.73
I cut down the open-ends slightly which allows me the rear line-of sight to fit a Myricycle mirror. Never used the adjustable ends so if you can buy one cheaper without this feature then I'd advise it.