Best impact driver on the market?

[CBM 0]

Hi guys i am new to this site, and i have been browsing through some of the reviews and i find the site really interesting.

I used to work on sites all the time until 4 yrs ago, when i decided i needed a break from the 5 o clock wake up , and the daily grind and the lovely english weather, however i have been helping a friend out on a site for the past 5 months and all the carpenters have impact drivers.

Now 20 yrs ago i worked in the racking industry and we always had impact drivers but carpenters used cordless drills. But now it appears things have reversed..

My question is which is the best Impact or Cordless. Alsoif you would be so kind to give a make of drill or driver you use and the cost. Thanks in advance. CBM