Hello There Beto: Have you notice the unicase effect? Unicase is when you mix uppercase and lowercase letters on the same word, making the uppercase smaller and thiner. I believe this is great for this logo, since we are "compensating" the sizes of the uppercase to match the lowercase letters. I really like entries #53 and #54 but also uploaded #55 using standard lowercase letters so you have another option. Let me know what you think. Feedback is always welcome.
PD: Si quieres hablar en español, no hay ningún problema. Un Abrazo Pablo