Soft Tonneau: Priority aerodynamics & rail size

[Blaster]

I have a lightning on the way and live in a rural area where security is a low priority and range is a high priority. I have checked the other threads on tonneau recommendations and was curious if anyone has opinions on a soft+sub $500 tonneau strictly for aerodynamic purposes.

Would also like to know if anyone has had issues with the rails being too big/hanging out too much with some covers, I'd prefer something that really didn't stick out into the bed.

Thanks for your help.

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