I got two of the early ones from Yak. These are EXTREMELY well made in my opinion. The light tunnel (or whatever it is called) also makes seeing the light much easier. The button works very well with a positive "click" feel to it when turning on. I bought these for cosmetic reasons and could not be more pleased or surprised at the functional improvements. They also appear to be very rugged in design, much more so than the stock ones.
"Unless someone like you cares a whole awful lot, nothing is going to get better. Its not" - Dr Suess