The B'n'M Pro Trollers are worth the money. Length is just personal preferance and fishing style. I use 10 and 12 footers. I will eventually replace my 10 footers with more 12 footers for pulling off the back. Some folks like to pull off the sides and have different length rods. I fan mine of the back corners with two sets of four Hy-Tek rod holders and I can get them spaced out ok with all same length poles. I am also set up where I can pull 4 off the sides when I am by myself and its nice having different length rods in that application.