I've got a stryd 2 run power meter. They sent me a super half price special for next few days - $150US I think. Their strength is prob for runs difficult to pace ie hills or trails or ultras. If yr interested I'll send u the link. Be warned there is lots of data alot of which I still don't know how to use but helpful I think for improving form
I think you actually need to run to improve your form !!!
Yeah there's that. If only gizmos could do it...