The Ergon grips with the built in barends are comfy, but the rarends are so small as to be nearly useless. I run the Ergon grips with separate barends, the sirt that curve inwards and allow for yet another hand position, similar to these:



If you do go this route, I'd suggest you take the time to do the little fiddly adjustments with both the Ergons and barends; the tiniest change in angle can make a huge difference.