thanks for the pics and info guys.
looks like it won't make a huge difference which one i get now seeing as how the trigger is easy/cheap to improve and most of the other stuff i was wondering about is more or less equal or inconsequential in terms of performance, function, etc.
guess it will come down to which ever one "feels" better in my hands or is more readily available/cheaper. or if i can manage to nab one with a 24" or 28" barrel. im guessing 452's were common enough for a long enough time that I shouldn't have trouble getting parts, repairs, etc later on if the need arises seeing as how they are slowly being phased out.
anyone else with other info keep it coming.