I would love to have a light similar to this one. I dont want a battery pack attached to my frame. How do they hold up on rough trails? i have always used a topeak moonshine hid and the battery mounts to the stem cap which is out of the way. The price seems a little high for the trion 600 though. Are there any others to compare it to with a built in battery. i was also considering the cygolite centauri 1000 or niterider dual700 (if im going to have a battery). Thanks