Look first at the frame, gears and drag construction
Anyway, dont get too hung up on the shape but make sure the guide is made from a quality/strong metal
Of course there are a few outlying situations also, like how several finesse techniques such as drop shots, Neko rigs and wacky rigs work best with a combination of a braided main line and a fluorocarbon leader
Tie the monofilament backing to the braided line using a uni-to-uni knot, Albright knot, or equivalent, then fill the spool with braid to the same 1/16 (1.5 mm) below the top lip
If youd like something ultra lightweight or intended for a specific method of fishing, you could spend 10 times as much as what our top pick costs, but our top pick will get the job done almost as well if not just as well most of the time
Take a photo before touching anything, seriously, it saves headaches