I'm looking for tail lights that have good off-axis visibility. I've got a Dinotte 120L, and while it's incredibly bright (on-axis), I'd like to add another light with more side visibility. Ideally I'd like something that can be mounted directly to my Tubus rack.

Two lights I'm considering are:

• Cat Eye TL-LD1100
• Cat Eye Reflex

I'm also thinking about adding a PDW Fenderbot, but that has limited off-axis visibility.

As an aside, does anyone else find that the Dinotte seatpost adaptor flexes a lot while riding?