Fortaz is a great antibiotic. It's generally well-tolerated. If you're nebbing it, the taste/smell can be an issue, but it never bothered me when I've done it that way. For me (your mileage may vary due to your specific bugs and their specific sensitivities), Fortaz is a fantastic drug. Makes my sputum crystal clear and keeps it that way for months. I even stop culturing pseudomonas for months afterwards due to how effective it is at suppressing things.