I have a different opinion, but it is possible that I am wrong. The change of data based on the shoes is not a problem related to stryd but to your mechanics that changes according to the shoes you use, so I think it is a very important data to make targeted choices
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Just throwing in an opinion here. I’m primarily a cyclist and rower. A friend asked me to do a 5k and I feared running. 
I got the Stryd just because it gave me piece of mind in the short timeframe I had to get ready. I found it incredibly useful, accurate and consistent, it seems like it must be alien technology how accurate it is. When you purchase the Stryd, 6 months of the app is included in the price. The app is useful once you dig into it. The race predictor was within about 20sec of what my actual time was, the stress scores are nice indicators during training since Garmin and the like doesn’t natively support running power yet. The power curves are nice for understanding where you are at. For someone who has been running for years, it might be gimmicky, but for a running novice it was very helpful for me.
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For less than that you could buy a Coros Pace 2 with power estimated at the wrist.
You won’t get the full running dynamics and wind power etc that you get from Stryd, but it’s 90% of the actual relevant data, and my experience running Coros alongside a Stryd is the values are very comparable.
Plus you get a new watch to play with!
(Shame I just couldn’t SEE the Coros watch and went via a Suunto 7 to an Epix 2).
Ray kinda likes Coros Pace 2 power.
And, well, Kilian is now a Coros athlete. 
Got one too and happy with it 
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This is exactly why and how I use Stryd.
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