I am a huge Icebreaker and Smartwool fan. I am afraid that the two Ibex pieces I own have not held up, and IMHO, I just don't think Ibex is as good a quality.

For high aerobic activities, like cycling, running and hiking, these two Icebreaker jackets come highly recommended:

The Rapid
The Quantum

These are great to wear over a base layer. I love my Icebreaker 260 half zip shirts as they are so versatile and do not hold odor at all!