
I know the Vivaldi is a bit of a newcomer, as it was introduced in '06. The E61s have been around since '61 so their design must have been perfected over the years. But now that I know a little more about E61s, I found out they are pretty good and stable, apply mechanical pre-infusion, but are not that much state-of-the-art... They are available for less than a Vivaldi, but there's a lot of quality differences between models. From what I understand, Faema invented the E61 and Vibiemme now uses exactly these group heads on their machines. Most of the others are simplified or cheaper versions and allegedly less sophisticated.
I understand the Vivaldi is a bit of a bargain because of its double boiler, the rotary pump (on the non-Mini) and it's PID. To me the downside is you don't have the same great visibility when working on your shot, there is not as much open space around the head.
So did any of you consider an E61, and why? And if so, with what kind of machine did you end up buying? And in hindsight, would you reconsider your choice? Do you think the Vivaldi does produce a better cup?
Oh! And what grinder did you end up with? I've read the HB 'Titan Grinder Project' article and am convinced that a good grinder is an absolute necessity to producing good shots. In this article, the Cimbali Max ends up with the most points and the Macap MXK ends up second.