Welcome to TFP!
The only pro of Biguanide is in the case of a real chlorine allergy. Not a self-diagnosed "pools make me itch" allergen, a real one where even bathing in a municipal water supply causes a rash. Outside of those exceedingly rare individuals there is no positives over chlorine.
One of the saddest things I have watched on the forum is the users who are convinced they are going to make Baqua work for them. It seems that they are on the forum every few weeks talking about how mold or algae or simple cloudiness is back and asking if anybody has heard of some new Baqua-approved chemical will solve the problem. They then plunk the money down for it, boast how it finally cleared things up, and are back a few weeks later because it stopped working. It hurts to watch because we have simple and far more cost effective solutions that are not temporary, but they will keep at it. Perhaps they still believe chlorine is a bad idea despite all the evidence and studies we offer. Perhaps their Baqua dealer is really just that persuasive. But perhaps it is just ego, that they can make it work and will never admit defeat. No matter the reason we are stuck watching them struggle while we use our clear pools.
Regardless, I will leave you with the most simple solution to funniness and clouding: proper use of chlorine. What you do with that solution is up to you and I wish you the best of luck with your pool!