I've got a Timney on a Vanguard action and the factory trigger on 2 S&W M1500s (both the same as Howa). I can not tell the difference between the 2 other than i was able to tune the factory trigger down to about 1 lb and the the Timney to 1.5 lbs. I like the Timney for its 3 position safety. I have been able to fairly easily tune several Vanguard/S&W M1500 (old style) triggers to a very nice and crisp 1 lb or so pull without any honing.
That said, the Jewel on my 700 action is a step above, but Jewel does not make triggers for the Howa actions.
I am very satisfied with the Timney and factory triggers I have.