Llama has a somewhat 'checkered past,' in quality of material, standardization of parts, and quality control. There is no doubt that some of their guns were good, depending on who was in charge of the manufacturing process at the time.
But personally, I have not had the opportunity to use one of those good ones, and all the experiences I have had with them left me completely unimpressed, with both accuracy and workmanship.
Rugers nearly always work, although the only full sized semi-auto they make that I would find suitable for carry, is the SR-9. Even then, I could buy a Springfield XD9 for about the same money, and I like them a lot better.