@ Ziemas: Yeah, I probably should've mentioned that, but I saw some reviews at CygoLite Hotshot 2W SL USB Rear Bike Light at REI.com that were within the past few months citing the same issue (maybe they got the old model?) and I thought I saw somewhere on the BLD where they were still disappointed in the mount, but can't find it now. It was late, might have confused something else. Still curious if anyone else has tried adding a horizontal (or vertical?) bar the their rack for attachments and how it worked out.

@ Westrid: I was impressed by the Vis 180, and was looking at their combo package with the 550, but L&M is still a little outside my budget ATT.