If you believe the propaganda put out by the line companies, you will have a problem with the coldwater line tangling on the deck or a boat, and you won't get the distance that you would with a stiffer line. If you are wading, the tangling may not be a problem. If you are a long distance caster, maybe 5 or 10' less won't bother you much.
the guides I have been working with recommend overlining. The splash or noise may be more dependant on the taper. I've been using a SA Windmaster which has a short front taper, and I haven't noticed any problems.