Clear blue digital OPK question

Ph

I’ve been using the easy@home LH test strips but I’m just tired of trying to decipher the damn things. I’m going to the store after work to pick up a clear blue digital OPK but I know they are more on the “expensive” side. Is it worth the money?

Are there any common problems or issues I should know about before buying them? And would it be better to get the 10 count or 20 count?

And, which urine works better with those? Morning, afternoon, or evening? Or does it even matter?

Advice and suggestions welcome!!