There's been a bit of controversy regarding Hushmail...
For this reason, I like the idea of neomail's Swiss server option. You can also pay them anonymously which is a plus. I'm currently trialing Lavabit's free service, and I've been happy with it. You don't get the serverside encryption with the free service, but everything works smoothly. I need to decide who I want to give my money to. I don't use webmail. Lavabit's is functional, but I don't really use it. It's for very infrequent use when I don't have my computer, or a portable drive with an email client on it.
I'm not familiar with Google's commercial offerings. I read a bit through the site, and it didn't say if they "read" your paid email or not. They read your free email, but they don't like to say that either :^D
There can be conveniences, and money savings by businesses going to the "cloud", but realize you're losing control of your data. It's being manipulated by software and machines you don't control. For business purposes, I'd prefer doing everything in-house, including email. It would likely cost more, but you get better security. When the government knocks on your door wanting your data, they have to come with a warrant. That isn't necessary if they want to get it from Google. The standards are much lower.
You may like to read this. It deals with philosophical issues regarding libre software you may or may not agree with, but it's worth a read...