Cateye Strada.
Why? Because the whole thing is one big button. You don't have to carefully poke the tip of your thumb into a particular recessed rubber button just to change from average speed to the time of day. Mash it with the flat of your thumb, or even with the heel of your hand. It's the one thing that I wish my newer Blackburn Neuro could do.
Wired or wireless, doesn't matter. Although I've had interference problems from running a Dinotte headlight's flash and low power settings, which made a Strada Wireless nonfunctional.