I actually prefer the straight taper barrel on the 1955 Model, cut to my preferred length of 5", like this one:
I have to admit, a tapered 4" barrel would make it a little better for every day packing, concealed or even just in a belt holster, but I love 5" N-frames. (smile)
Dave
PS: OOPS! Just realized the OP asked about 625s, not just 45 ACP revolvers. Well, just disregard my picture and comments. (LOL)