Anyone here have both? If so, I was wondering what the difference is. I "heard" that basically all the did was stiffen up the top section. I love my 4wt, but have broke my 8wt twice, both times the top section right above the Ferrel. Any insight would be great. Thinking of a 6wt, but don't know if I should just get a used 2X or save up for the 3X.