The pre-WWII guns had nice triggers, but most Colt DS's have good triggers. The problem is, the Colt trigger is DIFFERENT than any other brand of revolver.
Many people try a Colt trigger, and having only used S&W, Taurus, or Ruger guns the Colt doesn't feel "right".
Colt's "stack" near the end of the pull, and some people just don't like the feel.
The DS has a good trigger, and some careful tuning can make it a great trigger.
As for grips, the original DS as made from the 20's through about the 1950's had a full steel grip frame. The grips were just flat slabs. Starting sometime in the later 50's Colt changed the frame to a short "stub" type grip. This frame can be fitted with a very wide range of grips.
Many people like the Pachmayer round butt grip that Colt used on most of the late 1990's production guns.
As for as "shootability", probably the best DS's are the post-1972 models with the heavy, shrouded barrel. The extra weight up front gives a very nice feel, and the short frame can be fitted with a grip to suit even the smallest hand.
