[brainbag]

I've been using Choosy.app for easily managing different browsers for work and personal (and testing), and it works great. You set it to your default browser, and then anytime something opens a browser it pops up a picker. Lots of global and per-site configuration options like browser profile selection, private windows, etc.

[Quiark]

Does it also handle (let you pick) when opening a web link from another app?

[geniium]

Yes it does.