I got 16" powertech for my 372xpg seems to be good but in all fairness I have not used it much so I can't tell you about it's durability !?
but they are cheap so try one out
Ran a 25" with skip chain on my 361 for 2 full days blocking up some 40" red oak. No noticeable wear or anything else out of the ordinary. Pricing was very good and allot cheaper than the ES. So for as often as I'll use it, I'd buy another in this size. No experience with smaller ones with more time on them.:biggrinbounce2:
We sell them over her in oz. made by GB products.the steel is the same as pro top bars, no replaceable nose, smaller brg, and smaller width at centre of bar.