I think you are on "dangerous water" if you focus on just these two companies. So many other great builders and factories out there. But then again, you have to start somewhere. I think its wise of you to look at the second hand market, and more importantly try before buy. Anyway, with that said.
Ricardo Sanchis Carpio guitars range from student models to pretty darn good high end guitars. This is taken from Zavaletas La Casa De Guitarras:
The Spanish guitar maker Ricardo Sanchis Carpio is the head luthier of the Hermanos Sanchis Lopez firm in Valencia that was founded by his grandfather, Ricardo Sanchis Nacher in 1915. The founder having worked for guitar makers in Valencia for sometime, went to Madrid where he was befriended by Manuel Ramirez and Domingo Esteso. To perfect his craft, he remained in Madrid working for Domingo Esteso on Sundays for three years. As a result, the Sanchis family has had close relationships with Esteso, and with his heirs, the Hermanos Conde, ever since.
Ricardo Sanchis Nacher's son, Ricardo Sanchis Badia, learned his craft in the family workshop in Valencia. Ricardo Sanchis Carpio took over the firm from his father, building it into a shop with an international reputation for the quality of their classical and flamenco guitars.
The forth generation, the Hermanos Sanchis, (David and German Sanchis Lopez) are the son's of Ricardo Sanchis Carpio. While Ricardo continues to build the firms high end, handmade, concert classical and flamenco models, under his sons' direction the firm continues to build the affordable, high quality classical and flamenco guitars for which they are best known.
All the best from Sweden
1964 - Masaru Kohno No.7
1989 - Antonio Marin Montero
1999 - Lorenzo Frignani
2017 - Tobias Braun
Feel free to ask me anything about Japanese classical guitars.