I like the design of 20, but
-the way the tail of the t is tucked under the letter "l" in number 21. That way the letters can be closer together, which will look better.
-the handset in number 20 could be black also
I like the it font in number 21, but not the line drawn under and around
-and...BRIGHT, BRIGHT, SHINY, BRIGHT orange. Be brave!