Other than the support plan, I don't quite understand why I should use EY instead of Heroku. Why do you use one instead of the other?
Thanks!
Edit: I use Heroku but I see a lot of companies using EY.
A couple days ago, I needed to set up a new website, so I registered the domain at Godaddy, created a new (free) app on Heroku, and pointed the new domain at the Heroku app via the free, integrated Zerigo solution. I had the app running on a Heroku subdomain within minutes, and was done within 4 hours, including domain resolution.
The speed and cost at which I can produce and validate an idea on Heroku is unmatched by anything else I've seen. Outside of the cost of the domain and my time, I have zero costs to toss a domain up on Heroku. If the idea bears fruit, I can transition over to a paid Heroku plan and keep running with it. If it doesn't, there's no real loss to me.
Meanwhile, it doesn't look like EY offers anything that would cost me less than $85/month.
P.S -- No one fired for choosing Heroku, yet.
For example, I'm an EngineYard customer. EngineYard developers and support people have spent upwards of 100 hours with me discussing more advanced needs for security, scaling, integration, and professional services.
EngineYard's leadership has especially impressed me with Rails 3, JRuby, and Rubinius.
http://www.engineyard.com/company/press/10-06-09-engine-yard...