I don't think that it will matter in most situations. I use 10 pound exclusively now on most applications in the summertime. In winter I will downsize to 8lb test, especially if I am fishing light jigs or jerkbaits. BTW, I almost always use braid on spinning tackle, and mono or flouro on my baitcasters. 20 lb braid casts just as far as mono/flouro, and you won't have to worry about a fish breaking you off...even if you snag a carp or hook a big flathead.