Stronger yeah, through larger contact area, bu the ormal straight cut gears are uber tough- rare you ever seen a damaged or blown one. Aparently the spiral cut gears place a sideways load on the inner pinion gear bearing, causing to to fail quicker- the solution is a thrust bearing perhaps, but making that fit correctly + shimming woudl be a pain. PLus theres the gear reduction issue- I havent ran the numbers for a while, but you need something like an extra 4 or 5 teeth on the motor pinion to gether the same reduction ratio vs straightcut diffs, so it obviously causes issues if you have a limited gearing range to start with (due to motor hitting the tranny or lack of adjustment space/ spur gear options etc). I really would stick with the normal 1/8 buggy diffs- they havent let me down with my ~13lb rig pushing 5s lipo on a 2000kv motor, not a sniff of wear on them
