We use Plesk, Cpanel daily and others as well. I like Plesk, it is user friendly and colorful. However cpanel is famous for scripts like easyapache etc and its support. Plesk has also good support.
cPanel. Very easy to use for new people just starting to host websites. I also love how it can be customized so it works in almost any environment!
It is also great for the admin side, because you do not need to know a lot of shell commands to tweak the settings...Although I do prefer the ssh to change things.
Very much agreed. I would love to see a lighter load, but I would hate to see those clients leave because of it. I've worked with DA, but I dont think that half of our clients would understand it lol!