There are huge differences in reels. Starting with is it made from plastic, graphite, stamp steel, cast aluminum to cnc machined billet housing, SS gears or brass, drag ratings, there are a lot of differences. I get what you are saying since you mention Trout. But even in that category of fish, light drag, small line capacity there internals that can be better then others. My Fly reel I use for Stripers was 450. but a Fly reel costing 150. would be just fine since a Fly reel basically just hold line. On the other hand, I have Saltwater reels that sell between 500.00 and 600.00 and this is where you can't go cheap. I have some small spinners for stream Trout fishing, I think I paid around 30. for them. But we do very little stream fishing, plus trout are in very clean freshwater vs saltwater and are pretty easy on gear so the reels will last awhile. If we are at a lake, we always have a boat to fish from and those reels are a little bigger and more money since they take a little more abuse depending how we are fishing. Downriggers, trolling with junk ( flashers ) all put pressure on the reels, so buying better equipment makes sense. Also how many days a year a guy fishes, my casting reels for Stripers take a beating since its non stop casting all day several days a year and a 40.00 casting reel will fail much sooner then a 160.00 casting reel. Buy nice,,cry once, really is appropriate here. I'm not sure what reels you are comparing, but a small spinner costing 25.00 was not built cover the list of species of that same size reel costing 200.00 and there lays the difference,,,gregg