if it's for a mod I would go riser bars... if you have the money... Try all or monty... or any 2-3 inch rise DH bar rolled forwards... they are just a little heavier
The most important thing is to get one that fits the current stem. There is 2 sizes of tryall stems: 25.4mm and 31.8mm diameter. If you have the 31.8mm you will have more options. I would recomend a riser, but it depends on your style.