Command Line Interface
A more modern-looking font that's great at small sizes, perfect for the terminal, and has a more boxy look than others. The spacing and shape of characters is very even and easy on the eyes, which is nice for terminal or programming use (or any long writing projects).
ProFlexibility with different backgrounds
ProExtremely readable also in small font sizes
ProEasy on user's eyes
I replaced Yakuake with Guake even on KDE. Although Konsole is excellent as a windowed terminal, Guake is faster to swing down. IT has plenty of excellent colour schemes, and if you like to copy one, it's easy enough to use 'gpick' to copy and enter the colours yourself - so mine matches my teal...
ConAs with all dropdown terminals, it's great at what it does - but isn't great when you want to go from having it large to having side by side; but you just launch the regular terminal for that anyway.