Does anyone else keep a separate browser just for trying new web apps?

I've been doing this for a while now.

My main browser has all my normal stuff in it, so I started using Firefox as the place where I try random tools, new extensions, beta apps, etc.

I've tried Chrome profiles too, but I always end up mixing everything together eventually.

What's your setup for this?

Separate browser, separate profile, containers, or do you just use your normal browser and not worry about it?

I'm mostly curious what people have actually stuck with.