[mattengi]

  - syntax highlight
  - decent automatic indenting
  - semantic auto completion popup
  - on the fly compile
  - on the fly syntastic check(lint tool)

In vim, those settings are very sluggish in my old AMD 2 core 1Ghz cpu laptop. Sublime Text and Emacs both are quite reasonable.

I think vim could be more responsive.

This slow response problem is only reason for trying other editor. Please make this real.

[_delirium]

Wanting the "engine" of emacs but the interface conventions of vim, I've been using emacs with Evil (https://gitorious.org/evil/pages/Home) a bit lately, and quite liking the combination. It implements a fairly good portion of vim, enough to cover just about everything I regularly use, which was a pleasant surprise (I'm used to "vim compatibility" layers usually being pretty shallow).

[grondilu]

I don't use the last four of the features you're mentioning, but I can confirm indeed that syntax highlighting can make things terribly slow with large files and/or complex languages (I'm a Perl 6 guy), so yeah if multi-threading can help, I hope it gets implemented soon.