UI Bootstrap vs Angular material
<p>Currently my angular (v1) app exensively uses UI Bootstrap directives.
I would like to switch to Angular Material, but I'm worried about its weight (just the minified css is about 400kB, with some js modules we're talking about MBs).</p>

<p>Another major point: I don't get the <code>flex</code> choice for the grid layout, is not well supported and you will end to reduce the already bad old browser compatibility (since is an angular app).</p>

<p>I'm here mostly to take advices.</p>