I've had quite a few blinkies over the last couple of decades, and each has been better than the last. Yet, IMHO, they've all shared a common characteristic that I don't like: multiple blinking modes that I don't need or want.
I'm currently using a Cateye TL-LD1100, and I love the brightness, number and positioning of LED's and convenient mounting.
However, I wish it didn't have two different button switches (I always want both to be on), and I wish it didn't have multiple modes (I always want the first flashing mode). I do appreciate that I can depress and hold the buttons to bypass the unwanted modes when turning it off, but I'd much prefer one toggle switch that does nothing other than turn the entire thing on and off. As one final complaint, I wish the switch were not on the side-- too often the light is turned on when I lean my bike up against something.
Does anyone else share these frustrations? Do others prefer the same blinking mode (maybe lots of people want just one mode, but don't share the same preference for what that mode would be)? Does such a blinky already exist?