All, I have been thinking of either Ergon grips or a trekking bar. Do the Ergon grips really make enough of a difference to justify their purchase? The trekking bar also interests me and it seems like I could use the existing brake levers and shifters from some of the posts I've seen. This bike is primarily for commuting, but would like to get into more distance riding. The few long rides I've done thus far illustrate the need for a change. Any insight or experience would be appreciated.