Hello. I'm ttc (obviously) and was wondering what brand OPKs people have had good luck with. Specifically, I've heard that Clear Blue makes good ones, but I'm bummed about the amount of plastic waste I'd be putting into the world by using/throwing out a clunky piece of plastic every day. I used Pregmate brand (top reviewed strip from amazon) in February, but never got a strong positive. Wondering what others have used and gotten clear results from. Thanks!