In a pretty extreme deflex reflex like the Widow, you probably won't notice the additional 2 inches in length much, but you'll definitely notice the 5# less weight. Put them together, and I think you'll like the longer, lighter bow for 3D. That being said, I, and many others, find it harder too get off the string cleanly with a lighter weight bow. However, if you can train yourself to get a clean release with a light weight bow, which is one of the reasons we use them to work on form and targets, you'll be dynamite with a little heavier weight. Good luck.