I haven't bought a new DeWalt recently but have certainly been well pleased w/ the miter saw which was the last yellow tool. As far as one can tell simply looking, they appear to still be the same as then, and still got good ratings in last comparative reviews I've seen so can't say whether any degradation is an overall product line or a specific tool or line of tools or whether you just got unlucky on a particular tool...
And I note no one has yet taken the time to guess (or look up) the point of manufacture of the Milwaukee 18V hammer-drills before/after the TTI buyout. :) I did look at the (almost) brand new one to compare to one of vintage before for comparison... that I mentioned having looked at