I am happy with Fastmail too. Use it for more than 3 years and never look back. There is a hype about Hey mail recently but I won't buy it:
- It is more expensive than my current plan with Fastmail. Hey mail is 99$/year.
- As all of my current emails and contacts are in fastmail, I am not likely to switch to another providers. Also, because I am happy user, I don't see the need to switch.