I enjoyed Flash: Rebirth #4 a lot more than last issue. The story finally picked up.

Several genuinely tense moments with Prof. Zoom, and several "Hell, yeah!" moments. Fantastic splash pages for those! In particular, a certain double-page spread featuring three speedsters.

That said, I'm disappointed in a revelation about the speed force. It just felt like a really forced way of establishing the current-Flash-is-always-the-best hierarchy. And it doesn't make sense in terms of what the speed force does -- namely, explain where speedsters get their power.

Looking forward to next issue and the charge of the Lightning Brigade!

Full review here