i can honestly say having higher quality rods and reels have landed me countless more fish than I would have caught otherwise. I bass fish for hours and hours on end and fish a ton of tournaments. i can fish 10 hours straight and never feel tired or sore or anything, even with flipping the heaviest weights made.
you get what you pay for. low weight, highly sensitive, well balanced, specialized rods come with a higher price tag.
are you throwing shrimp on the bottom or under a cork? then not much more is needed than an ugly stick (sennsitivity wise)
are you throwing a beetle, a cocahoe, or a spinnerbait for reds/specks, then i would spend at least 50 or 60 bucks for a nice, light rod (if you fish often)
are you bass fishing often and fishing tournaments, where being able to feel the difference in an 1/8th of an ounce and being able to catch big fish can mean the difference between winning money or standing at the weigh-in watching what your day could have been like? then i'd suggest spending $80+.
it's all about what you need it for.