My Stihl bars of late don't seem to last as long as they did 10 years ago. Both rail and bar groove seem to last about half as long. Something has changed.
Don't get too concerned with rail wear. I flip my bars every time I switch loops and when I replace the loops (I run 2 loops per saw), I replace the bar, no exceptions. When I flip any bar I check the rails for wear and burrs and file them as needed. The trick if you will to mitigating bar wear is using a good bar oil and tensioning the chain properly. I keep my bar oilers on the plus side all the time.
Here is 24" Tsu in 058 3/8. You didnt mention gage you used. $46 plus shipping. HV2458TSU -HUSKY TSUMURA BAR 24" 3/8'' PITCH .058 GA. 84-DRIVERS *MADE IN JAPAN*
Light weight Tsu in 050 3/8 24" $68 plus shipping HV2450TSULI - HUSKY TSUMURA ULTRA LITE BAR 24" 3/8" PITCH .050 GAUGE 84-DRIVERS *MADE IN JAPAN*
I run Tsumura Lightweight bars. Long lasting for a decent price. Heard nothing but good things about Cannon bars, but they're crazy expensive for my tastes.
Cannon bars are pretty much aimed at the pro handfaller market.