I don't know about BIFL, but my wife has some HydraPeak that have held up well for a few years.

The only reason I didn't buy HydraPeak is that they didn't publish their dimensions and I needed to make sure it would fit in the bottle holder on my backpack. I bought a few ThermoFlask that are pretty good but tend to leak a little if the flip up straw isn't exactly in the right position when you sip from it.

Whatever you get, I'd recommend buying directly from the manufacturers website because there is a lot of counterfeit insulated bottles on Amazon.